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Finding the Fourth Proportional to 72,398.80, 108,598.20 and 60,151.60

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Solution

The fourth proportional to 72,398.80, 108,598.20 and 60,151.60 is: 90,227.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,398.80 : 108,598.20 = 60,151.60 : x
  2. Step 2: Convert to fraction form
    72,398.80/108,598.20 = 60,151.60/x
  3. Step 3: Cross multiply
    72,398.80x = 108,598.20 × 60,151.60
  4. Step 4: Simplify right side
    72,398.80x = 6,532,355,487.12
  5. Step 5: Solve for x
    x = 6,532,355,487.12/72,398.80
  6. Step 6: Final answer
    x = 90,227.40

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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.