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Finding the Fourth Proportional to 86,610.70, 129,866.43 and 26,623.56

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Solution

The fourth proportional to 86,610.70, 129,866.43 and 26,623.56 is: 39,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,610.70 : 129,866.43 = 26,623.56 : x
  2. Step 2: Convert to fraction form
    86,610.70/129,866.43 = 26,623.56/x
  3. Step 3: Cross multiply
    86,610.70x = 129,866.43 × 26,623.56
  4. Step 4: Simplify right side
    86,610.70x = 3,457,506,691.09
  5. Step 5: Solve for x
    x = 3,457,506,691.09/86,610.70
  6. Step 6: Final answer
    x = 39,920.09

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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.