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Finding the Fourth Proportional to 402,659.92, 604,017.06 and 136,329.52

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Solution

The fourth proportional to 402,659.92, 604,017.06 and 136,329.52 is: 204,503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,659.92 : 604,017.06 = 136,329.52 : x
  2. Step 2: Convert to fraction form
    402,659.92/604,017.06 = 136,329.52/x
  3. Step 3: Cross multiply
    402,659.92x = 604,017.06 × 136,329.52
  4. Step 4: Simplify right side
    402,659.92x = 82,345,355,861.61
  5. Step 5: Solve for x
    x = 82,345,355,861.61/402,659.92
  6. Step 6: Final answer
    x = 204,503.48

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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.