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Finding the Fourth Proportional to 12,125.44, 16,732.88 and 6,820.08

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Solution

The fourth proportional to 12,125.44, 16,732.88 and 6,820.08 is: 9,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.44 : 16,732.88 = 6,820.08 : x
  2. Step 2: Convert to fraction form
    12,125.44/16,732.88 = 6,820.08/x
  3. Step 3: Cross multiply
    12,125.44x = 16,732.88 × 6,820.08
  4. Step 4: Simplify right side
    12,125.44x = 114,119,580.23
  5. Step 5: Solve for x
    x = 114,119,580.23/12,125.44
  6. Step 6: Final answer
    x = 9,411.58

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Half scale
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Double scale
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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.