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Finding the Fourth Proportional to 463,439.92, 639,217.29 and 425,322.58

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Solution

The fourth proportional to 463,439.92, 639,217.29 and 425,322.58 is: 586,642.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,439.92 : 639,217.29 = 425,322.58 : x
  2. Step 2: Convert to fraction form
    463,439.92/639,217.29 = 425,322.58/x
  3. Step 3: Cross multiply
    463,439.92x = 639,217.29 × 425,322.58
  4. Step 4: Simplify right side
    463,439.92x = 271,873,546,963.41
  5. Step 5: Solve for x
    x = 271,873,546,963.41/463,439.92
  6. Step 6: Final answer
    x = 586,642.49

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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.