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Finding the Fourth Proportional to 127,663.78, 176,207.05 and 73,940.13

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Solution

The fourth proportional to 127,663.78, 176,207.05 and 73,940.13 is: 102,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,663.78 : 176,207.05 = 73,940.13 : x
  2. Step 2: Convert to fraction form
    127,663.78/176,207.05 = 73,940.13/x
  3. Step 3: Cross multiply
    127,663.78x = 176,207.05 × 73,940.13
  4. Step 4: Simplify right side
    127,663.78x = 13,028,772,183.92
  5. Step 5: Solve for x
    x = 13,028,772,183.92/127,663.78
  6. Step 6: Final answer
    x = 102,055.35

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1.5x scale

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.