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Finding the Fourth Proportional to 133,031.30, 199,278.15 and 82,957.70

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Solution

The fourth proportional to 133,031.30, 199,278.15 and 82,957.70 is: 124,268.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,031.30 : 199,278.15 = 82,957.70 : x
  2. Step 2: Convert to fraction form
    133,031.30/199,278.15 = 82,957.70/x
  3. Step 3: Cross multiply
    133,031.30x = 199,278.15 × 82,957.70
  4. Step 4: Simplify right side
    133,031.30x = 16,531,656,984.26
  5. Step 5: Solve for x
    x = 16,531,656,984.26/133,031.30
  6. Step 6: Final answer
    x = 124,268.93

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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.