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Finding the Fourth Proportional to 8,809.63, 12,157.20 and 4,830.73

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Solution

The fourth proportional to 8,809.63, 12,157.20 and 4,830.73 is: 6,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.63 : 12,157.20 = 4,830.73 : x
  2. Step 2: Convert to fraction form
    8,809.63/12,157.20 = 4,830.73/x
  3. Step 3: Cross multiply
    8,809.63x = 12,157.20 × 4,830.73
  4. Step 4: Simplify right side
    8,809.63x = 58,728,150.76
  5. Step 5: Solve for x
    x = 58,728,150.76/8,809.63
  6. Step 6: Final answer
    x = 6,666.36

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Half scale
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Double scale
Find fourth proportional to 8,810.63, 12,158.58 and 4,831.73
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.