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Finding the Fourth Proportional to 127,602.71, 176,091.81 and 73,890.58

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Solution

The fourth proportional to 127,602.71, 176,091.81 and 73,890.58 is: 101,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,602.71 : 176,091.81 = 73,890.58 : x
  2. Step 2: Convert to fraction form
    127,602.71/176,091.81 = 73,890.58/x
  3. Step 3: Cross multiply
    127,602.71x = 176,091.81 × 73,890.58
  4. Step 4: Simplify right side
    127,602.71x = 13,011,525,974.15
  5. Step 5: Solve for x
    x = 13,011,525,974.15/127,602.71
  6. Step 6: Final answer
    x = 101,969.04

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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.