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Finding the Fourth Proportional to 161,603.28, 223,000.32 and 89,969.52

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Solution

The fourth proportional to 161,603.28, 223,000.32 and 89,969.52 is: 124,151.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,603.28 : 223,000.32 = 89,969.52 : x
  2. Step 2: Convert to fraction form
    161,603.28/223,000.32 = 89,969.52/x
  3. Step 3: Cross multiply
    161,603.28x = 223,000.32 × 89,969.52
  4. Step 4: Simplify right side
    161,603.28x = 20,063,231,750.25
  5. Step 5: Solve for x
    x = 20,063,231,750.25/161,603.28
  6. Step 6: Final answer
    x = 124,151.14

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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.