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Finding the Fourth Proportional to 62,988.84, 86,921.40 and 34,693.92

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Solution

The fourth proportional to 62,988.84, 86,921.40 and 34,693.92 is: 47,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,988.84 : 86,921.40 = 34,693.92 : x
  2. Step 2: Convert to fraction form
    62,988.84/86,921.40 = 34,693.92/x
  3. Step 3: Cross multiply
    62,988.84x = 86,921.40 × 34,693.92
  4. Step 4: Simplify right side
    62,988.84x = 3,015,644,097.89
  5. Step 5: Solve for x
    x = 3,015,644,097.89/62,988.84
  6. Step 6: Final answer
    x = 47,875.85

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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.