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Finding the Fourth Proportional to 393,160.20, 590,177.70 and 243,569.40

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Solution

The fourth proportional to 393,160.20, 590,177.70 and 243,569.40 is: 365,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,160.20 : 590,177.70 = 243,569.40 : x
  2. Step 2: Convert to fraction form
    393,160.20/590,177.70 = 243,569.40/x
  3. Step 3: Cross multiply
    393,160.20x = 590,177.70 × 243,569.40
  4. Step 4: Simplify right side
    393,160.20x = 143,749,228,282.38
  5. Step 5: Solve for x
    x = 143,749,228,282.38/393,160.20
  6. Step 6: Final answer
    x = 365,625.08

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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.