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Finding the Fourth Proportional to 677,461.62, 934,829.65 and 391,073.97

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Solution

The fourth proportional to 677,461.62, 934,829.65 and 391,073.97 is: 539,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,461.62 : 934,829.65 = 391,073.97 : x
  2. Step 2: Convert to fraction form
    677,461.62/934,829.65 = 391,073.97/x
  3. Step 3: Cross multiply
    677,461.62x = 934,829.65 × 391,073.97
  4. Step 4: Simplify right side
    677,461.62x = 365,587,542,499.21
  5. Step 5: Solve for x
    x = 365,587,542,499.21/677,461.62
  6. Step 6: Final answer
    x = 539,643.18

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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.