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Finding the Fourth Proportional to 91,636.59, 126,535.55 and 68,936.16

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Solution

The fourth proportional to 91,636.59, 126,535.55 and 68,936.16 is: 95,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,636.59 : 126,535.55 = 68,936.16 : x
  2. Step 2: Convert to fraction form
    91,636.59/126,535.55 = 68,936.16/x
  3. Step 3: Cross multiply
    91,636.59x = 126,535.55 × 68,936.16
  4. Step 4: Simplify right side
    91,636.59x = 8,722,874,575.81
  5. Step 5: Solve for x
    x = 8,722,874,575.81/91,636.59
  6. Step 6: Final answer
    x = 95,189.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.