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Finding the Fourth Proportional to 111,759.90, 154,230.18 and 64,013.20

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Solution

The fourth proportional to 111,759.90, 154,230.18 and 64,013.20 is: 88,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,759.90 : 154,230.18 = 64,013.20 : x
  2. Step 2: Convert to fraction form
    111,759.90/154,230.18 = 64,013.20/x
  3. Step 3: Cross multiply
    111,759.90x = 154,230.18 × 64,013.20
  4. Step 4: Simplify right side
    111,759.90x = 9,872,767,600.30
  5. Step 5: Solve for x
    x = 9,872,767,600.30/111,759.90
  6. Step 6: Final answer
    x = 88,339.09

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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.