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Finding the Fourth Proportional to 573,355.10, 791,161.28 and 315,189.48

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Solution

The fourth proportional to 573,355.10, 791,161.28 and 315,189.48 is: 434,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,355.10 : 791,161.28 = 315,189.48 : x
  2. Step 2: Convert to fraction form
    573,355.10/791,161.28 = 315,189.48/x
  3. Step 3: Cross multiply
    573,355.10x = 791,161.28 × 315,189.48
  4. Step 4: Simplify right side
    573,355.10x = 249,365,712,439.33
  5. Step 5: Solve for x
    x = 249,365,712,439.33/573,355.10
  6. Step 6: Final answer
    x = 434,923.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.