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Finding the Fourth Proportional to 99,335.80, 149,003.70 and 92,726.20

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Solution

The fourth proportional to 99,335.80, 149,003.70 and 92,726.20 is: 139,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,335.80 : 149,003.70 = 92,726.20 : x
  2. Step 2: Convert to fraction form
    99,335.80/149,003.70 = 92,726.20/x
  3. Step 3: Cross multiply
    99,335.80x = 149,003.70 × 92,726.20
  4. Step 4: Simplify right side
    99,335.80x = 13,816,546,886.94
  5. Step 5: Solve for x
    x = 13,816,546,886.94/99,335.80
  6. Step 6: Final answer
    x = 139,089.30

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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.