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Finding the Fourth Proportional to 117,665.14, 176,506.80 and 70,600.90

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Solution

The fourth proportional to 117,665.14, 176,506.80 and 70,600.90 is: 105,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,665.14 : 176,506.80 = 70,600.90 : x
  2. Step 2: Convert to fraction form
    117,665.14/176,506.80 = 70,600.90/x
  3. Step 3: Cross multiply
    117,665.14x = 176,506.80 × 70,600.90
  4. Step 4: Simplify right side
    117,665.14x = 12,461,538,936.12
  5. Step 5: Solve for x
    x = 12,461,538,936.12/117,665.14
  6. Step 6: Final answer
    x = 105,906.80

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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.