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Finding the Fourth Proportional to 996,613.90, 1,494,920.85 and 286,600.30

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Solution

The fourth proportional to 996,613.90, 1,494,920.85 and 286,600.30 is: 429,900.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,613.90 : 1,494,920.85 = 286,600.30 : x
  2. Step 2: Convert to fraction form
    996,613.90/1,494,920.85 = 286,600.30/x
  3. Step 3: Cross multiply
    996,613.90x = 1,494,920.85 × 286,600.30
  4. Step 4: Simplify right side
    996,613.90x = 428,444,764,086.26
  5. Step 5: Solve for x
    x = 428,444,764,086.26/996,613.90
  6. Step 6: Final answer
    x = 429,900.45

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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.