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Finding the Fourth Proportional to 263,148.10, 394,722.15 and 97,000.90

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Solution

The fourth proportional to 263,148.10, 394,722.15 and 97,000.90 is: 145,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,148.10 : 394,722.15 = 97,000.90 : x
  2. Step 2: Convert to fraction form
    263,148.10/394,722.15 = 97,000.90/x
  3. Step 3: Cross multiply
    263,148.10x = 394,722.15 × 97,000.90
  4. Step 4: Simplify right side
    263,148.10x = 38,288,403,799.94
  5. Step 5: Solve for x
    x = 38,288,403,799.94/263,148.10
  6. Step 6: Final answer
    x = 145,501.35

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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.