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Finding the Fourth Proportional to 117,463.72, 176,142.66 and 70,100.68

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Solution

The fourth proportional to 117,463.72, 176,142.66 and 70,100.68 is: 105,119.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,463.72 : 176,142.66 = 70,100.68 : x
  2. Step 2: Convert to fraction form
    117,463.72/176,142.66 = 70,100.68/x
  3. Step 3: Cross multiply
    117,463.72x = 176,142.66 × 70,100.68
  4. Step 4: Simplify right side
    117,463.72x = 12,347,720,243.01
  5. Step 5: Solve for x
    x = 12,347,720,243.01/117,463.72
  6. Step 6: Final answer
    x = 105,119.44

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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.