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Finding the Fourth Proportional to 61,398.12, 84,724.56 and 34,535.28

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Solution

The fourth proportional to 61,398.12, 84,724.56 and 34,535.28 is: 47,655.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,398.12 : 84,724.56 = 34,535.28 : x
  2. Step 2: Convert to fraction form
    61,398.12/84,724.56 = 34,535.28/x
  3. Step 3: Cross multiply
    61,398.12x = 84,724.56 × 34,535.28
  4. Step 4: Simplify right side
    61,398.12x = 2,925,986,402.48
  5. Step 5: Solve for x
    x = 2,925,986,402.48/61,398.12
  6. Step 6: Final answer
    x = 47,655.96

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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.