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Finding the Fourth Proportional to 573,467.31, 791,405.10 and 315,363.87

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Solution

The fourth proportional to 573,467.31, 791,405.10 and 315,363.87 is: 435,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,467.31 : 791,405.10 = 315,363.87 : x
  2. Step 2: Convert to fraction form
    573,467.31/791,405.10 = 315,363.87/x
  3. Step 3: Cross multiply
    573,467.31x = 791,405.10 × 315,363.87
  4. Step 4: Simplify right side
    573,467.31x = 249,580,575,073.74
  5. Step 5: Solve for x
    x = 249,580,575,073.74/573,467.31
  6. Step 6: Final answer
    x = 435,213.26

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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.