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Finding the Fourth Proportional to 167,445.20, 251,167.80 and 83,221.40

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Solution

The fourth proportional to 167,445.20, 251,167.80 and 83,221.40 is: 124,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,445.20 : 251,167.80 = 83,221.40 : x
  2. Step 2: Convert to fraction form
    167,445.20/251,167.80 = 83,221.40/x
  3. Step 3: Cross multiply
    167,445.20x = 251,167.80 × 83,221.40
  4. Step 4: Simplify right side
    167,445.20x = 20,902,535,950.92
  5. Step 5: Solve for x
    x = 20,902,535,950.92/167,445.20
  6. Step 6: Final answer
    x = 124,832.10

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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.