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Finding the Fourth Proportional to 86,187.74, 129,281.60 and 27,028.17

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Solution

The fourth proportional to 86,187.74, 129,281.60 and 27,028.17 is: 40,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,187.74 : 129,281.60 = 27,028.17 : x
  2. Step 2: Convert to fraction form
    86,187.74/129,281.60 = 27,028.17/x
  3. Step 3: Cross multiply
    86,187.74x = 129,281.60 × 27,028.17
  4. Step 4: Simplify right side
    86,187.74x = 3,494,244,927.53
  5. Step 5: Solve for x
    x = 3,494,244,927.53/86,187.74
  6. Step 6: Final answer
    x = 40,542.25

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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.