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Finding the Fourth Proportional to 161,814.31, 223,294.52 and 90,191.88

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Solution

The fourth proportional to 161,814.31, 223,294.52 and 90,191.88 is: 124,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,814.31 : 223,294.52 = 90,191.88 : x
  2. Step 2: Convert to fraction form
    161,814.31/223,294.52 = 90,191.88/x
  3. Step 3: Cross multiply
    161,814.31x = 223,294.52 × 90,191.88
  4. Step 4: Simplify right side
    161,814.31x = 20,139,352,777.98
  5. Step 5: Solve for x
    x = 20,139,352,777.98/161,814.31
  6. Step 6: Final answer
    x = 124,459.65

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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.