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Finding the Fourth Proportional to 117,906.40, 176,859.60 and 70,667.20

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Solution

The fourth proportional to 117,906.40, 176,859.60 and 70,667.20 is: 106,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,906.40 : 176,859.60 = 70,667.20 : x
  2. Step 2: Convert to fraction form
    117,906.40/176,859.60 = 70,667.20/x
  3. Step 3: Cross multiply
    117,906.40x = 176,859.60 × 70,667.20
  4. Step 4: Simplify right side
    117,906.40x = 12,498,172,725.12
  5. Step 5: Solve for x
    x = 12,498,172,725.12/117,906.40
  6. Step 6: Final answer
    x = 106,000.80

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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.