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Finding the Fourth Proportional to 577,115.70, 865,673.57 and 156,391.57

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Solution

The fourth proportional to 577,115.70, 865,673.57 and 156,391.57 is: 234,587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,115.70 : 865,673.57 = 156,391.57 : x
  2. Step 2: Convert to fraction form
    577,115.70/865,673.57 = 156,391.57/x
  3. Step 3: Cross multiply
    577,115.70x = 865,673.57 × 156,391.57
  4. Step 4: Simplify right side
    577,115.70x = 135,384,048,719.81
  5. Step 5: Solve for x
    x = 135,384,048,719.81/577,115.70
  6. Step 6: Final answer
    x = 234,587.36

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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.