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Finding the Fourth Proportional to 402,722.55, 604,042.25 and 136,476.18

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Solution

The fourth proportional to 402,722.55, 604,042.25 and 136,476.18 is: 204,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,722.55 : 604,042.25 = 136,476.18 : x
  2. Step 2: Convert to fraction form
    402,722.55/604,042.25 = 136,476.18/x
  3. Step 3: Cross multiply
    402,722.55x = 604,042.25 × 136,476.18
  4. Step 4: Simplify right side
    402,722.55x = 82,437,378,156.22
  5. Step 5: Solve for x
    x = 82,437,378,156.22/402,722.55
  6. Step 6: Final answer
    x = 204,700.18

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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.