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Finding the Fourth Proportional to 55,772.60, 83,658.90 and 39,151.40

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Solution

The fourth proportional to 55,772.60, 83,658.90 and 39,151.40 is: 58,727.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,772.60 : 83,658.90 = 39,151.40 : x
  2. Step 2: Convert to fraction form
    55,772.60/83,658.90 = 39,151.40/x
  3. Step 3: Cross multiply
    55,772.60x = 83,658.90 × 39,151.40
  4. Step 4: Simplify right side
    55,772.60x = 3,275,363,057.46
  5. Step 5: Solve for x
    x = 3,275,363,057.46/55,772.60
  6. Step 6: Final answer
    x = 58,727.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.