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Finding the Fourth Proportional to 587,786.77, 811,154.63 and 329,720.92

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Solution

The fourth proportional to 587,786.77, 811,154.63 and 329,720.92 is: 455,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,786.77 : 811,154.63 = 329,720.92 : x
  2. Step 2: Convert to fraction form
    587,786.77/811,154.63 = 329,720.92/x
  3. Step 3: Cross multiply
    587,786.77x = 811,154.63 × 329,720.92
  4. Step 4: Simplify right side
    587,786.77x = 267,454,647,189.37
  5. Step 5: Solve for x
    x = 267,454,647,189.37/587,786.77
  6. Step 6: Final answer
    x = 455,019.85

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Double scale
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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.