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Finding the Fourth Proportional to 91,282.94, 136,724.13 and 75,308.28

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Solution

The fourth proportional to 91,282.94, 136,724.13 and 75,308.28 is: 112,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,282.94 : 136,724.13 = 75,308.28 : x
  2. Step 2: Convert to fraction form
    91,282.94/136,724.13 = 75,308.28/x
  3. Step 3: Cross multiply
    91,282.94x = 136,724.13 × 75,308.28
  4. Step 4: Simplify right side
    91,282.94x = 10,296,459,064.80
  5. Step 5: Solve for x
    x = 10,296,459,064.80/91,282.94
  6. Step 6: Final answer
    x = 112,797.20

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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.