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Finding the Fourth Proportional to 473,429.20, 710,143.80 and 136,469.20

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Solution

The fourth proportional to 473,429.20, 710,143.80 and 136,469.20 is: 204,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,429.20 : 710,143.80 = 136,469.20 : x
  2. Step 2: Convert to fraction form
    473,429.20/710,143.80 = 136,469.20/x
  3. Step 3: Cross multiply
    473,429.20x = 710,143.80 × 136,469.20
  4. Step 4: Simplify right side
    473,429.20x = 96,912,756,270.96
  5. Step 5: Solve for x
    x = 96,912,756,270.96/473,429.20
  6. Step 6: Final answer
    x = 204,703.80

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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.