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Finding the Fourth Proportional to 98,839, 148,272.99 and 31,348.53

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Solution

The fourth proportional to 98,839, 148,272.99 and 31,348.53 is: 47,027.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,839 : 148,272.99 = 31,348.53 : x
  2. Step 2: Convert to fraction form
    98,839/148,272.99 = 31,348.53/x
  3. Step 3: Cross multiply
    98,839x = 148,272.99 × 31,348.53
  4. Step 4: Simplify right side
    98,839x = 4,648,140,275.20
  5. Step 5: Solve for x
    x = 4,648,140,275.20/98,839
  6. Step 6: Final answer
    x = 47,027.39

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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.