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Finding the Fourth Proportional to 61,711.39, 85,162.54 and 34,486.28

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Solution

The fourth proportional to 61,711.39, 85,162.54 and 34,486.28 is: 47,591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,711.39 : 85,162.54 = 34,486.28 : x
  2. Step 2: Convert to fraction form
    61,711.39/85,162.54 = 34,486.28/x
  3. Step 3: Cross multiply
    61,711.39x = 85,162.54 × 34,486.28
  4. Step 4: Simplify right side
    61,711.39x = 2,936,938,774.14
  5. Step 5: Solve for x
    x = 2,936,938,774.14/61,711.39
  6. Step 6: Final answer
    x = 47,591.52

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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.