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Finding the Fourth Proportional to 127,806.70, 191,710.05 and 34,321.90

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Solution

The fourth proportional to 127,806.70, 191,710.05 and 34,321.90 is: 51,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,806.70 : 191,710.05 = 34,321.90 : x
  2. Step 2: Convert to fraction form
    127,806.70/191,710.05 = 34,321.90/x
  3. Step 3: Cross multiply
    127,806.70x = 191,710.05 × 34,321.90
  4. Step 4: Simplify right side
    127,806.70x = 6,579,853,165.10
  5. Step 5: Solve for x
    x = 6,579,853,165.10/127,806.70
  6. Step 6: Final answer
    x = 51,482.85

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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.