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Finding the Fourth Proportional to 73,167.39, 100,971.17 and 39,633.39

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Solution

The fourth proportional to 73,167.39, 100,971.17 and 39,633.39 is: 54,694.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,167.39 : 100,971.17 = 39,633.39 : x
  2. Step 2: Convert to fraction form
    73,167.39/100,971.17 = 39,633.39/x
  3. Step 3: Cross multiply
    73,167.39x = 100,971.17 × 39,633.39
  4. Step 4: Simplify right side
    73,167.39x = 4,001,829,561.20
  5. Step 5: Solve for x
    x = 4,001,829,561.20/73,167.39
  6. Step 6: Final answer
    x = 54,694.17

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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.