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Finding the Fourth Proportional to 61,575.68, 84,935.04 and 42,705.92

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Solution

The fourth proportional to 61,575.68, 84,935.04 and 42,705.92 is: 58,906.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,575.68 : 84,935.04 = 42,705.92 : x
  2. Step 2: Convert to fraction form
    61,575.68/84,935.04 = 42,705.92/x
  3. Step 3: Cross multiply
    61,575.68x = 84,935.04 × 42,705.92
  4. Step 4: Simplify right side
    61,575.68x = 3,627,229,023.44
  5. Step 5: Solve for x
    x = 3,627,229,023.44/61,575.68
  6. Step 6: Final answer
    x = 58,906.84

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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.