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Finding the Fourth Proportional to 425,458.55, 587,132.78 and 234,471.95

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Solution

The fourth proportional to 425,458.55, 587,132.78 and 234,471.95 is: 323,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,458.55 : 587,132.78 = 234,471.95 : x
  2. Step 2: Convert to fraction form
    425,458.55/587,132.78 = 234,471.95/x
  3. Step 3: Cross multiply
    425,458.55x = 587,132.78 × 234,471.95
  4. Step 4: Simplify right side
    425,458.55x = 137,666,163,727.50
  5. Step 5: Solve for x
    x = 137,666,163,727.50/425,458.55
  6. Step 6: Final answer
    x = 323,571.27

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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.