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Finding the Fourth Proportional to 61,279.81, 84,559.54 and 34,425.28

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Solution

The fourth proportional to 61,279.81, 84,559.54 and 34,425.28 is: 47,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,279.81 : 84,559.54 = 34,425.28 : x
  2. Step 2: Convert to fraction form
    61,279.81/84,559.54 = 34,425.28/x
  3. Step 3: Cross multiply
    61,279.81x = 84,559.54 × 34,425.28
  4. Step 4: Simplify right side
    61,279.81x = 2,910,985,841.17
  5. Step 5: Solve for x
    x = 2,910,985,841.17/61,279.81
  6. Step 6: Final answer
    x = 47,503.18

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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.