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Finding the Fourth Proportional to 91,085.93, 125,695.49 and 50,251.68

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Solution

The fourth proportional to 91,085.93, 125,695.49 and 50,251.68 is: 69,345.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,085.93 : 125,695.49 = 50,251.68 : x
  2. Step 2: Convert to fraction form
    91,085.93/125,695.49 = 50,251.68/x
  3. Step 3: Cross multiply
    91,085.93x = 125,695.49 × 50,251.68
  4. Step 4: Simplify right side
    91,085.93x = 6,316,409,540.92
  5. Step 5: Solve for x
    x = 6,316,409,540.92/91,085.93
  6. Step 6: Final answer
    x = 69,345.61

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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.