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Finding the Fourth Proportional to 283,885.44, 391,779.84 and 156,561.28

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Solution

The fourth proportional to 283,885.44, 391,779.84 and 156,561.28 is: 216,064.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,885.44 : 391,779.84 = 156,561.28 : x
  2. Step 2: Convert to fraction form
    283,885.44/391,779.84 = 156,561.28/x
  3. Step 3: Cross multiply
    283,885.44x = 391,779.84 × 156,561.28
  4. Step 4: Simplify right side
    283,885.44x = 61,337,553,228.60
  5. Step 5: Solve for x
    x = 61,337,553,228.60/283,885.44
  6. Step 6: Final answer
    x = 216,064.46

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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.