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Finding the Fourth Proportional to 111,766.16, 154,239.18 and 64,023.68

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Solution

The fourth proportional to 111,766.16, 154,239.18 and 64,023.68 is: 88,353.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,766.16 : 154,239.18 = 64,023.68 : x
  2. Step 2: Convert to fraction form
    111,766.16/154,239.18 = 64,023.68/x
  3. Step 3: Cross multiply
    111,766.16x = 154,239.18 × 64,023.68
  4. Step 4: Simplify right side
    111,766.16x = 9,874,959,903.78
  5. Step 5: Solve for x
    x = 9,874,959,903.78/111,766.16
  6. Step 6: Final answer
    x = 88,353.75

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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.