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Finding the Fourth Proportional to 61,616.43, 85,031.65 and 34,759.47

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Solution

The fourth proportional to 61,616.43, 85,031.65 and 34,759.47 is: 47,968.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,616.43 : 85,031.65 = 34,759.47 : x
  2. Step 2: Convert to fraction form
    61,616.43/85,031.65 = 34,759.47/x
  3. Step 3: Cross multiply
    61,616.43x = 85,031.65 × 34,759.47
  4. Step 4: Simplify right side
    61,616.43x = 2,955,655,087.23
  5. Step 5: Solve for x
    x = 2,955,655,087.23/61,616.43
  6. Step 6: Final answer
    x = 47,968.62

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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.