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Finding the Fourth Proportional to 117,605.28, 176,408.04 and 65,125.56

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Solution

The fourth proportional to 117,605.28, 176,408.04 and 65,125.56 is: 97,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,605.28 : 176,408.04 = 65,125.56 : x
  2. Step 2: Convert to fraction form
    117,605.28/176,408.04 = 65,125.56/x
  3. Step 3: Cross multiply
    117,605.28x = 176,408.04 × 65,125.56
  4. Step 4: Simplify right side
    117,605.28x = 11,488,672,393.50
  5. Step 5: Solve for x
    x = 11,488,672,393.50/117,605.28
  6. Step 6: Final answer
    x = 97,688.41

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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.