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Finding the Fourth Proportional to 111,760.40, 154,230.87 and 64,013.71

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Solution

The fourth proportional to 111,760.40, 154,230.87 and 64,013.71 is: 88,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,760.40 : 154,230.87 = 64,013.71 : x
  2. Step 2: Convert to fraction form
    111,760.40/154,230.87 = 64,013.71/x
  3. Step 3: Cross multiply
    111,760.40x = 154,230.87 × 64,013.71
  4. Step 4: Simplify right side
    111,760.40x = 9,872,889,094.00
  5. Step 5: Solve for x
    x = 9,872,889,094.00/111,760.40
  6. Step 6: Final answer
    x = 88,339.78

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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.