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Finding the Fourth Proportional to 91,351.77, 136,683.12 and 53,932.20

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Solution

The fourth proportional to 91,351.77, 136,683.12 and 53,932.20 is: 80,694.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,351.77 : 136,683.12 = 53,932.20 : x
  2. Step 2: Convert to fraction form
    91,351.77/136,683.12 = 53,932.20/x
  3. Step 3: Cross multiply
    91,351.77x = 136,683.12 × 53,932.20
  4. Step 4: Simplify right side
    91,351.77x = 7,371,621,364.46
  5. Step 5: Solve for x
    x = 7,371,621,364.46/91,351.77
  6. Step 6: Final answer
    x = 80,694.89

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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.