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Finding the Fourth Proportional to 884,314.31, 1,326,751.85 and 315,682.90

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Solution

The fourth proportional to 884,314.31, 1,326,751.85 and 315,682.90 is: 473,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,314.31 : 1,326,751.85 = 315,682.90 : x
  2. Step 2: Convert to fraction form
    884,314.31/1,326,751.85 = 315,682.90/x
  3. Step 3: Cross multiply
    884,314.31x = 1,326,751.85 × 315,682.90
  4. Step 4: Simplify right side
    884,314.31x = 418,832,869,060.69
  5. Step 5: Solve for x
    x = 418,832,869,060.69/884,314.31
  6. Step 6: Final answer
    x = 473,624.44

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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.