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Finding the Fourth Proportional to 283,779.97, 391,209.30 and 223,245.40

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Solution

The fourth proportional to 283,779.97, 391,209.30 and 223,245.40 is: 307,758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,779.97 : 391,209.30 = 223,245.40 : x
  2. Step 2: Convert to fraction form
    283,779.97/391,209.30 = 223,245.40/x
  3. Step 3: Cross multiply
    283,779.97x = 391,209.30 × 223,245.40
  4. Step 4: Simplify right side
    283,779.97x = 87,335,676,662.22
  5. Step 5: Solve for x
    x = 87,335,676,662.22/283,779.97
  6. Step 6: Final answer
    x = 307,758.43

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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.