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Finding the Fourth Proportional to 162,207.81, 223,844.40 and 90,588.81

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Solution

The fourth proportional to 162,207.81, 223,844.40 and 90,588.81 is: 125,011.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,207.81 : 223,844.40 = 90,588.81 : x
  2. Step 2: Convert to fraction form
    162,207.81/223,844.40 = 90,588.81/x
  3. Step 3: Cross multiply
    162,207.81x = 223,844.40 × 90,588.81
  4. Step 4: Simplify right side
    162,207.81x = 20,277,797,821.16
  5. Step 5: Solve for x
    x = 20,277,797,821.16/162,207.81
  6. Step 6: Final answer
    x = 125,011.23

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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.