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Finding the Fourth Proportional to 418,321.56, 577,305.90 and 237,068.76

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Solution

The fourth proportional to 418,321.56, 577,305.90 and 237,068.76 is: 327,167.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,321.56 : 577,305.90 = 237,068.76 : x
  2. Step 2: Convert to fraction form
    418,321.56/577,305.90 = 237,068.76/x
  3. Step 3: Cross multiply
    418,321.56x = 577,305.90 × 237,068.76
  4. Step 4: Simplify right side
    418,321.56x = 136,861,193,853.68
  5. Step 5: Solve for x
    x = 136,861,193,853.68/418,321.56
  6. Step 6: Final answer
    x = 327,167.44

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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.