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Finding the Fourth Proportional to 579,370.85, 869,103.55 and 291,034.19

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Solution

The fourth proportional to 579,370.85, 869,103.55 and 291,034.19 is: 436,575.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,370.85 : 869,103.55 = 291,034.19 : x
  2. Step 2: Convert to fraction form
    579,370.85/869,103.55 = 291,034.19/x
  3. Step 3: Cross multiply
    579,370.85x = 869,103.55 × 291,034.19
  4. Step 4: Simplify right side
    579,370.85x = 252,938,846,974.04
  5. Step 5: Solve for x
    x = 252,938,846,974.04/579,370.85
  6. Step 6: Final answer
    x = 436,575.03

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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.