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Finding the Fourth Proportional to 447,862.88, 618,038.16 and 243,909.20

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Solution

The fourth proportional to 447,862.88, 618,038.16 and 243,909.20 is: 336,587.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,862.88 : 618,038.16 = 243,909.20 : x
  2. Step 2: Convert to fraction form
    447,862.88/618,038.16 = 243,909.20/x
  3. Step 3: Cross multiply
    447,862.88x = 618,038.16 × 243,909.20
  4. Step 4: Simplify right side
    447,862.88x = 150,745,193,175.07
  5. Step 5: Solve for x
    x = 150,745,193,175.07/447,862.88
  6. Step 6: Final answer
    x = 336,587.83

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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.