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Finding the Fourth Proportional to 573,414.95, 791,332.92 and 315,311.55

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Solution

The fourth proportional to 573,414.95, 791,332.92 and 315,311.55 is: 435,141.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,414.95 : 791,332.92 = 315,311.55 : x
  2. Step 2: Convert to fraction form
    573,414.95/791,332.92 = 315,311.55/x
  3. Step 3: Cross multiply
    573,414.95x = 791,332.92 × 315,311.55
  4. Step 4: Simplify right side
    573,414.95x = 249,516,409,571.23
  5. Step 5: Solve for x
    x = 249,516,409,571.23/573,414.95
  6. Step 6: Final answer
    x = 435,141.10

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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.