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Finding the Fourth Proportional to 161,649.81, 223,076.99 and 93,679.83

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Solution

The fourth proportional to 161,649.81, 223,076.99 and 93,679.83 is: 129,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,649.81 : 223,076.99 = 93,679.83 : x
  2. Step 2: Convert to fraction form
    161,649.81/223,076.99 = 93,679.83/x
  3. Step 3: Cross multiply
    161,649.81x = 223,076.99 × 93,679.83
  4. Step 4: Simplify right side
    161,649.81x = 20,897,814,031.71
  5. Step 5: Solve for x
    x = 20,897,814,031.71/161,649.81
  6. Step 6: Final answer
    x = 129,278.31

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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.