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Finding the Fourth Proportional to 117,806.60, 176,321.10 and 91,368.20

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Solution

The fourth proportional to 117,806.60, 176,321.10 and 91,368.20 is: 136,750.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,806.60 : 176,321.10 = 91,368.20 : x
  2. Step 2: Convert to fraction form
    117,806.60/176,321.10 = 91,368.20/x
  3. Step 3: Cross multiply
    117,806.60x = 176,321.10 × 91,368.20
  4. Step 4: Simplify right side
    117,806.60x = 16,110,141,529.02
  5. Step 5: Solve for x
    x = 16,110,141,529.02/117,806.60
  6. Step 6: Final answer
    x = 136,750.76

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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.