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Finding the Fourth Proportional to 117,640.20, 176,201.10 and 70,811.40

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Solution

The fourth proportional to 117,640.20, 176,201.10 and 70,811.40 is: 106,061.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,640.20 : 176,201.10 = 70,811.40 : x
  2. Step 2: Convert to fraction form
    117,640.20/176,201.10 = 70,811.40/x
  3. Step 3: Cross multiply
    117,640.20x = 176,201.10 × 70,811.40
  4. Step 4: Simplify right side
    117,640.20x = 12,477,046,572.54
  5. Step 5: Solve for x
    x = 12,477,046,572.54/117,640.20
  6. Step 6: Final answer
    x = 106,061.08

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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.