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Finding the Fourth Proportional to 98,453.61, 147,712.82 and 39,256.65

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Solution

The fourth proportional to 98,453.61, 147,712.82 and 39,256.65 is: 58,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,453.61 : 147,712.82 = 39,256.65 : x
  2. Step 2: Convert to fraction form
    98,453.61/147,712.82 = 39,256.65/x
  3. Step 3: Cross multiply
    98,453.61x = 147,712.82 × 39,256.65
  4. Step 4: Simplify right side
    98,453.61x = 5,798,710,278.97
  5. Step 5: Solve for x
    x = 5,798,710,278.97/98,453.61
  6. Step 6: Final answer
    x = 58,897.89

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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.