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Finding the Fourth Proportional to 12,179.75, 16,808.07 and 6,590.75

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Solution

The fourth proportional to 12,179.75, 16,808.07 and 6,590.75 is: 9,095.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.75 : 16,808.07 = 6,590.75 : x
  2. Step 2: Convert to fraction form
    12,179.75/16,808.07 = 6,590.75/x
  3. Step 3: Cross multiply
    12,179.75x = 16,808.07 × 6,590.75
  4. Step 4: Simplify right side
    12,179.75x = 110,777,787.35
  5. Step 5: Solve for x
    x = 110,777,787.35/12,179.75
  6. Step 6: Final answer
    x = 9,095.24

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Find fourth proportional to 6,089.88, 8,404.04 and 3,295.38
Half scale
Find fourth proportional to 24,359.50, 33,616.14 and 13,181.50
Double scale
Find fourth proportional to 12,180.75, 16,809.45 and 6,591.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.