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Finding the Fourth Proportional to 417,780.12, 576,475.74 and 238,897.56

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Solution

The fourth proportional to 417,780.12, 576,475.74 and 238,897.56 is: 329,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,780.12 : 576,475.74 = 238,897.56 : x
  2. Step 2: Convert to fraction form
    417,780.12/576,475.74 = 238,897.56/x
  3. Step 3: Cross multiply
    417,780.12x = 576,475.74 × 238,897.56
  4. Step 4: Simplify right side
    417,780.12x = 137,718,647,685.19
  5. Step 5: Solve for x
    x = 137,718,647,685.19/417,780.12
  6. Step 6: Final answer
    x = 329,643.85

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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.