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Finding the Fourth Proportional to 58,731.84, 81,017.28 and 38,592

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Solution

The fourth proportional to 58,731.84, 81,017.28 and 38,592 is: 53,235.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,731.84 : 81,017.28 = 38,592 : x
  2. Step 2: Convert to fraction form
    58,731.84/81,017.28 = 38,592/x
  3. Step 3: Cross multiply
    58,731.84x = 81,017.28 × 38,592
  4. Step 4: Simplify right side
    58,731.84x = 3,126,618,869.76
  5. Step 5: Solve for x
    x = 3,126,618,869.76/58,731.84
  6. Step 6: Final answer
    x = 53,235.50

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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.