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Finding the Fourth Proportional to 163,475.10, 225,602.28 and 91,854.90

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Solution

The fourth proportional to 163,475.10, 225,602.28 and 91,854.90 is: 126,763.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,475.10 : 225,602.28 = 91,854.90 : x
  2. Step 2: Convert to fraction form
    163,475.10/225,602.28 = 91,854.90/x
  3. Step 3: Cross multiply
    163,475.10x = 225,602.28 × 91,854.90
  4. Step 4: Simplify right side
    163,475.10x = 20,722,674,869.17
  5. Step 5: Solve for x
    x = 20,722,674,869.17/163,475.10
  6. Step 6: Final answer
    x = 126,763.49

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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.