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Finding the Fourth Proportional to 482,686.70, 724,064.67 and 127,696.50

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Solution

The fourth proportional to 482,686.70, 724,064.67 and 127,696.50 is: 191,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,686.70 : 724,064.67 = 127,696.50 : x
  2. Step 2: Convert to fraction form
    482,686.70/724,064.67 = 127,696.50/x
  3. Step 3: Cross multiply
    482,686.70x = 724,064.67 × 127,696.50
  4. Step 4: Simplify right side
    482,686.70x = 92,460,524,132.66
  5. Step 5: Solve for x
    x = 92,460,524,132.66/482,686.70
  6. Step 6: Final answer
    x = 191,553.91

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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.