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Finding the Fourth Proportional to 625,737.60, 863,516.16 and 339,256.80

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Solution

The fourth proportional to 625,737.60, 863,516.16 and 339,256.80 is: 468,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,737.60 : 863,516.16 = 339,256.80 : x
  2. Step 2: Convert to fraction form
    625,737.60/863,516.16 = 339,256.80/x
  3. Step 3: Cross multiply
    625,737.60x = 863,516.16 × 339,256.80
  4. Step 4: Simplify right side
    625,737.60x = 292,953,729,189.89
  5. Step 5: Solve for x
    x = 292,953,729,189.89/625,737.60
  6. Step 6: Final answer
    x = 468,173.45

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1.5x scale

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.