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Finding the Fourth Proportional to 98,374.71, 135,428.78 and 93,855.52

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Solution

The fourth proportional to 98,374.71, 135,428.78 and 93,855.52 is: 129,207.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,374.71 : 135,428.78 = 93,855.52 : x
  2. Step 2: Convert to fraction form
    98,374.71/135,428.78 = 93,855.52/x
  3. Step 3: Cross multiply
    98,374.71x = 135,428.78 × 93,855.52
  4. Step 4: Simplify right side
    98,374.71x = 12,710,737,684.07
  5. Step 5: Solve for x
    x = 12,710,737,684.07/98,374.71
  6. Step 6: Final answer
    x = 129,207.37

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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.