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Finding the Fourth Proportional to 98,691.54, 148,052.84 and 42,547.61

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Solution

The fourth proportional to 98,691.54, 148,052.84 and 42,547.61 is: 63,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,691.54 : 148,052.84 = 42,547.61 : x
  2. Step 2: Convert to fraction form
    98,691.54/148,052.84 = 42,547.61/x
  3. Step 3: Cross multiply
    98,691.54x = 148,052.84 × 42,547.61
  4. Step 4: Simplify right side
    98,691.54x = 6,299,293,542.71
  5. Step 5: Solve for x
    x = 6,299,293,542.71/98,691.54
  6. Step 6: Final answer
    x = 63,828.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.