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Finding the Fourth Proportional to 114,174.63, 157,711.59 and 87,644.97

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Solution

The fourth proportional to 114,174.63, 157,711.59 and 87,644.97 is: 121,065.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,174.63 : 157,711.59 = 87,644.97 : x
  2. Step 2: Convert to fraction form
    114,174.63/157,711.59 = 87,644.97/x
  3. Step 3: Cross multiply
    114,174.63x = 157,711.59 × 87,644.97
  4. Step 4: Simplify right side
    114,174.63x = 13,822,627,574.20
  5. Step 5: Solve for x
    x = 13,822,627,574.20/114,174.63
  6. Step 6: Final answer
    x = 121,065.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.