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Finding the Fourth Proportional to 283,558.83, 391,328.60 and 156,234.39

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Solution

The fourth proportional to 283,558.83, 391,328.60 and 156,234.39 is: 215,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,558.83 : 391,328.60 = 156,234.39 : x
  2. Step 2: Convert to fraction form
    283,558.83/391,328.60 = 156,234.39/x
  3. Step 3: Cross multiply
    283,558.83x = 391,328.60 × 156,234.39
  4. Step 4: Simplify right side
    283,558.83x = 61,138,984,329.38
  5. Step 5: Solve for x
    x = 61,138,984,329.38/283,558.83
  6. Step 6: Final answer
    x = 215,613.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.