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Finding the Fourth Proportional to 577,123.70, 865,685.57 and 156,399.57

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Solution

The fourth proportional to 577,123.70, 865,685.57 and 156,399.57 is: 234,599.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,123.70 : 865,685.57 = 156,399.57 : x
  2. Step 2: Convert to fraction form
    577,123.70/865,685.57 = 156,399.57/x
  3. Step 3: Cross multiply
    577,123.70x = 865,685.57 × 156,399.57
  4. Step 4: Simplify right side
    577,123.70x = 135,392,850,121.21
  5. Step 5: Solve for x
    x = 135,392,850,121.21/577,123.70
  6. Step 6: Final answer
    x = 234,599.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.