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Finding the Fourth Proportional to 166,387.80, 249,581.70 and 113,899.80

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Solution

The fourth proportional to 166,387.80, 249,581.70 and 113,899.80 is: 170,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,387.80 : 249,581.70 = 113,899.80 : x
  2. Step 2: Convert to fraction form
    166,387.80/249,581.70 = 113,899.80/x
  3. Step 3: Cross multiply
    166,387.80x = 249,581.70 × 113,899.80
  4. Step 4: Simplify right side
    166,387.80x = 28,427,305,713.66
  5. Step 5: Solve for x
    x = 28,427,305,713.66/166,387.80
  6. Step 6: Final answer
    x = 170,849.70

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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.