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Finding the Fourth Proportional to 591,712.10, 887,568.15 and 217,880.90

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Solution

The fourth proportional to 591,712.10, 887,568.15 and 217,880.90 is: 326,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,712.10 : 887,568.15 = 217,880.90 : x
  2. Step 2: Convert to fraction form
    591,712.10/887,568.15 = 217,880.90/x
  3. Step 3: Cross multiply
    591,712.10x = 887,568.15 × 217,880.90
  4. Step 4: Simplify right side
    591,712.10x = 193,384,147,333.34
  5. Step 5: Solve for x
    x = 193,384,147,333.34/591,712.10
  6. Step 6: Final answer
    x = 326,821.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.