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Finding the Fourth Proportional to 573,434.67, 791,360.15 and 315,331.20

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Solution

The fourth proportional to 573,434.67, 791,360.15 and 315,331.20 is: 435,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,434.67 : 791,360.15 = 315,331.20 : x
  2. Step 2: Convert to fraction form
    573,434.67/791,360.15 = 315,331.20/x
  3. Step 3: Cross multiply
    573,434.67x = 791,360.15 × 315,331.20
  4. Step 4: Simplify right side
    573,434.67x = 249,540,540,198.22
  5. Step 5: Solve for x
    x = 249,540,540,198.22/573,434.67
  6. Step 6: Final answer
    x = 435,168.21

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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.