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Finding the Fourth Proportional to 127,862.70, 191,787.11 and 39,116.21

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Solution

The fourth proportional to 127,862.70, 191,787.11 and 39,116.21 is: 58,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,862.70 : 191,787.11 = 39,116.21 : x
  2. Step 2: Convert to fraction form
    127,862.70/191,787.11 = 39,116.21/x
  3. Step 3: Cross multiply
    127,862.70x = 191,787.11 × 39,116.21
  4. Step 4: Simplify right side
    127,862.70x = 7,501,984,195.00
  5. Step 5: Solve for x
    x = 7,501,984,195.00/127,862.70
  6. Step 6: Final answer
    x = 58,672.19

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1.5x scale

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.