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Finding the Fourth Proportional to 163,751.64, 225,973.89 and 92,130.90

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Solution

The fourth proportional to 163,751.64, 225,973.89 and 92,130.90 is: 127,138.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,751.64 : 225,973.89 = 92,130.90 : x
  2. Step 2: Convert to fraction form
    163,751.64/225,973.89 = 92,130.90/x
  3. Step 3: Cross multiply
    163,751.64x = 225,973.89 × 92,130.90
  4. Step 4: Simplify right side
    163,751.64x = 20,819,177,862.20
  5. Step 5: Solve for x
    x = 20,819,177,862.20/163,751.64
  6. Step 6: Final answer
    x = 127,138.74

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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.