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Finding the Fourth Proportional to 127,953.36, 176,610.78 and 74,255.67

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Solution

The fourth proportional to 127,953.36, 176,610.78 and 74,255.67 is: 102,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,953.36 : 176,610.78 = 74,255.67 : x
  2. Step 2: Convert to fraction form
    127,953.36/176,610.78 = 74,255.67/x
  3. Step 3: Cross multiply
    127,953.36x = 176,610.78 × 74,255.67
  4. Step 4: Simplify right side
    127,953.36x = 13,114,351,798.12
  5. Step 5: Solve for x
    x = 13,114,351,798.12/127,953.36
  6. Step 6: Final answer
    x = 102,493.22

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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.