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Finding the Fourth Proportional to 86,188.40, 129,282.60 and 27,028.84

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Solution

The fourth proportional to 86,188.40, 129,282.60 and 27,028.84 is: 40,543.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,188.40 : 129,282.60 = 27,028.84 : x
  2. Step 2: Convert to fraction form
    86,188.40/129,282.60 = 27,028.84/x
  3. Step 3: Cross multiply
    86,188.40x = 129,282.60 × 27,028.84
  4. Step 4: Simplify right side
    86,188.40x = 3,494,358,710.18
  5. Step 5: Solve for x
    x = 3,494,358,710.18/86,188.40
  6. Step 6: Final answer
    x = 40,543.26

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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.