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Finding the Fourth Proportional to 185,608.80, 256,140.13 and 100,725.86

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Solution

The fourth proportional to 185,608.80, 256,140.13 and 100,725.86 is: 139,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,608.80 : 256,140.13 = 100,725.86 : x
  2. Step 2: Convert to fraction form
    185,608.80/256,140.13 = 100,725.86/x
  3. Step 3: Cross multiply
    185,608.80x = 256,140.13 × 100,725.86
  4. Step 4: Simplify right side
    185,608.80x = 25,799,934,874.76
  5. Step 5: Solve for x
    x = 25,799,934,874.76/185,608.80
  6. Step 6: Final answer
    x = 139,001.68

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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.