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Finding the Fourth Proportional to 61,587.68, 84,990.65 and 34,730.42

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Solution

The fourth proportional to 61,587.68, 84,990.65 and 34,730.42 is: 47,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,587.68 : 84,990.65 = 34,730.42 : x
  2. Step 2: Convert to fraction form
    61,587.68/84,990.65 = 34,730.42/x
  3. Step 3: Cross multiply
    61,587.68x = 84,990.65 × 34,730.42
  4. Step 4: Simplify right side
    61,587.68x = 2,951,760,632.45
  5. Step 5: Solve for x
    x = 2,951,760,632.45/61,587.68
  6. Step 6: Final answer
    x = 47,927.78

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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.