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Finding the Fourth Proportional to 256,524.77, 384,870.18 and 123,387.71

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Solution

The fourth proportional to 256,524.77, 384,870.18 and 123,387.71 is: 185,121.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,524.77 : 384,870.18 = 123,387.71 : x
  2. Step 2: Convert to fraction form
    256,524.77/384,870.18 = 123,387.71/x
  3. Step 3: Cross multiply
    256,524.77x = 384,870.18 × 123,387.71
  4. Step 4: Simplify right side
    256,524.77x = 47,488,248,695.84
  5. Step 5: Solve for x
    x = 47,488,248,695.84/256,524.77
  6. Step 6: Final answer
    x = 185,121.49

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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.