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Finding the Fourth Proportional to 111,627.90, 167,441.85 and 28,521.90

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Solution

The fourth proportional to 111,627.90, 167,441.85 and 28,521.90 is: 42,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,627.90 : 167,441.85 = 28,521.90 : x
  2. Step 2: Convert to fraction form
    111,627.90/167,441.85 = 28,521.90/x
  3. Step 3: Cross multiply
    111,627.90x = 167,441.85 × 28,521.90
  4. Step 4: Simplify right side
    111,627.90x = 4,775,759,701.52
  5. Step 5: Solve for x
    x = 4,775,759,701.52/111,627.90
  6. Step 6: Final answer
    x = 42,782.85

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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.