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Finding the Fourth Proportional to 283,778.98, 391,617.64 and 156,459.12

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Solution

The fourth proportional to 283,778.98, 391,617.64 and 156,459.12 is: 215,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,778.98 : 391,617.64 = 156,459.12 : x
  2. Step 2: Convert to fraction form
    283,778.98/391,617.64 = 156,459.12/x
  3. Step 3: Cross multiply
    283,778.98x = 391,617.64 × 156,459.12
  4. Step 4: Simplify right side
    283,778.98x = 61,272,151,330.88
  5. Step 5: Solve for x
    x = 61,272,151,330.88/283,778.98
  6. Step 6: Final answer
    x = 215,915.05

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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.