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Finding the Fourth Proportional to 117,808.60, 176,324.10 and 91,370.20

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Solution

The fourth proportional to 117,808.60, 176,324.10 and 91,370.20 is: 136,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,808.60 : 176,324.10 = 91,370.20 : x
  2. Step 2: Convert to fraction form
    117,808.60/176,324.10 = 91,370.20/x
  3. Step 3: Cross multiply
    117,808.60x = 176,324.10 × 91,370.20
  4. Step 4: Simplify right side
    117,808.60x = 16,110,768,281.82
  5. Step 5: Solve for x
    x = 16,110,768,281.82/117,808.60
  6. Step 6: Final answer
    x = 136,753.75

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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.