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Finding the Fourth Proportional to 60,398.71, 90,597.94 and 15,420.04

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Solution

The fourth proportional to 60,398.71, 90,597.94 and 15,420.04 is: 23,130.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,398.71 : 90,597.94 = 15,420.04 : x
  2. Step 2: Convert to fraction form
    60,398.71/90,597.94 = 15,420.04/x
  3. Step 3: Cross multiply
    60,398.71x = 90,597.94 × 15,420.04
  4. Step 4: Simplify right side
    60,398.71x = 1,397,023,593.67
  5. Step 5: Solve for x
    x = 1,397,023,593.67/60,398.71
  6. Step 6: Final answer
    x = 23,130.02

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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.