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Finding the Fourth Proportional to 91,446.71, 126,239.61 and 68,794.34

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Solution

The fourth proportional to 91,446.71, 126,239.61 and 68,794.34 is: 94,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,446.71 : 126,239.61 = 68,794.34 : x
  2. Step 2: Convert to fraction form
    91,446.71/126,239.61 = 68,794.34/x
  3. Step 3: Cross multiply
    91,446.71x = 126,239.61 × 68,794.34
  4. Step 4: Simplify right side
    91,446.71x = 8,684,570,020.61
  5. Step 5: Solve for x
    x = 8,684,570,020.61/91,446.71
  6. Step 6: Final answer
    x = 94,968.65

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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.