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Finding the Fourth Proportional to 161,902.33, 223,486.76 and 121,732.74

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Solution

The fourth proportional to 161,902.33, 223,486.76 and 121,732.74 is: 168,037.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,902.33 : 223,486.76 = 121,732.74 : x
  2. Step 2: Convert to fraction form
    161,902.33/223,486.76 = 121,732.74/x
  3. Step 3: Cross multiply
    161,902.33x = 223,486.76 × 121,732.74
  4. Step 4: Simplify right side
    161,902.33x = 27,205,655,952.85
  5. Step 5: Solve for x
    x = 27,205,655,952.85/161,902.33
  6. Step 6: Final answer
    x = 168,037.46

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1.5x scale

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.