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Finding the Fourth Proportional to 60,501.31, 90,770.43 and 30,939.91

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Solution

The fourth proportional to 60,501.31, 90,770.43 and 30,939.91 is: 46,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,501.31 : 90,770.43 = 30,939.91 : x
  2. Step 2: Convert to fraction form
    60,501.31/90,770.43 = 30,939.91/x
  3. Step 3: Cross multiply
    60,501.31x = 90,770.43 × 30,939.91
  4. Step 4: Simplify right side
    60,501.31x = 2,808,428,934.86
  5. Step 5: Solve for x
    x = 2,808,428,934.86/60,501.31
  6. Step 6: Final answer
    x = 46,419.31

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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.