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Finding the Fourth Proportional to 587,585.50, 811,116.06 and 396,857.20

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Solution

The fourth proportional to 587,585.50, 811,116.06 and 396,857.20 is: 547,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,585.50 : 811,116.06 = 396,857.20 : x
  2. Step 2: Convert to fraction form
    587,585.50/811,116.06 = 396,857.20/x
  3. Step 3: Cross multiply
    587,585.50x = 811,116.06 × 396,857.20
  4. Step 4: Simplify right side
    587,585.50x = 321,897,248,446.63
  5. Step 5: Solve for x
    x = 321,897,248,446.63/587,585.50
  6. Step 6: Final answer
    x = 547,830.48

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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.