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Finding the Fourth Proportional to 473,431.20, 710,146.80 and 136,471.20

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Solution

The fourth proportional to 473,431.20, 710,146.80 and 136,471.20 is: 204,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,431.20 : 710,146.80 = 136,471.20 : x
  2. Step 2: Convert to fraction form
    473,431.20/710,146.80 = 136,471.20/x
  3. Step 3: Cross multiply
    473,431.20x = 710,146.80 × 136,471.20
  4. Step 4: Simplify right side
    473,431.20x = 96,914,585,972.16
  5. Step 5: Solve for x
    x = 96,914,585,972.16/473,431.20
  6. Step 6: Final answer
    x = 204,706.80

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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.