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Finding the Fourth Proportional to 393,763.13, 590,732.17 and 144,445.13

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Solution

The fourth proportional to 393,763.13, 590,732.17 and 144,445.13 is: 216,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,763.13 : 590,732.17 = 144,445.13 : x
  2. Step 2: Convert to fraction form
    393,763.13/590,732.17 = 144,445.13/x
  3. Step 3: Cross multiply
    393,763.13x = 590,732.17 × 144,445.13
  4. Step 4: Simplify right side
    393,763.13x = 85,328,385,090.83
  5. Step 5: Solve for x
    x = 85,328,385,090.83/393,763.13
  6. Step 6: Final answer
    x = 216,699.78

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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.