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Finding the Fourth Proportional to 127,998.38, 176,631.30 and 71,398.82

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Solution

The fourth proportional to 127,998.38, 176,631.30 and 71,398.82 is: 98,526.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,998.38 : 176,631.30 = 71,398.82 : x
  2. Step 2: Convert to fraction form
    127,998.38/176,631.30 = 71,398.82/x
  3. Step 3: Cross multiply
    127,998.38x = 176,631.30 × 71,398.82
  4. Step 4: Simplify right side
    127,998.38x = 12,611,265,511.91
  5. Step 5: Solve for x
    x = 12,611,265,511.91/127,998.38
  6. Step 6: Final answer
    x = 98,526.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.