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Finding the Fourth Proportional to 111,681.20, 167,230.20 and 72,023.60

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Solution

The fourth proportional to 111,681.20, 167,230.20 and 72,023.60 is: 107,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,681.20 : 167,230.20 = 72,023.60 : x
  2. Step 2: Convert to fraction form
    111,681.20/167,230.20 = 72,023.60/x
  3. Step 3: Cross multiply
    111,681.20x = 167,230.20 × 72,023.60
  4. Step 4: Simplify right side
    111,681.20x = 12,044,521,032.72
  5. Step 5: Solve for x
    x = 12,044,521,032.72/111,681.20
  6. Step 6: Final answer
    x = 107,847.35

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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.