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Finding the Fourth Proportional to 85,324.67, 127,985.99 and 22,139.17

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Solution

The fourth proportional to 85,324.67, 127,985.99 and 22,139.17 is: 33,208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,324.67 : 127,985.99 = 22,139.17 : x
  2. Step 2: Convert to fraction form
    85,324.67/127,985.99 = 22,139.17/x
  3. Step 3: Cross multiply
    85,324.67x = 127,985.99 × 22,139.17
  4. Step 4: Simplify right side
    85,324.67x = 2,833,503,370.68
  5. Step 5: Solve for x
    x = 2,833,503,370.68/85,324.67
  6. Step 6: Final answer
    x = 33,208.49

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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.