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Finding the Fourth Proportional to 112,066.40, 167,905.20 and 72,603.20

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Solution

The fourth proportional to 112,066.40, 167,905.20 and 72,603.20 is: 108,778.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,066.40 : 167,905.20 = 72,603.20 : x
  2. Step 2: Convert to fraction form
    112,066.40/167,905.20 = 72,603.20/x
  3. Step 3: Cross multiply
    112,066.40x = 167,905.20 × 72,603.20
  4. Step 4: Simplify right side
    112,066.40x = 12,190,454,816.64
  5. Step 5: Solve for x
    x = 12,190,454,816.64/112,066.40
  6. Step 6: Final answer
    x = 108,778.86

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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.