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Finding the Fourth Proportional to 161,806.94, 223,294.60 and 90,191.49

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Solution

The fourth proportional to 161,806.94, 223,294.60 and 90,191.49 is: 124,464.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,806.94 : 223,294.60 = 90,191.49 : x
  2. Step 2: Convert to fraction form
    161,806.94/223,294.60 = 90,191.49/x
  3. Step 3: Cross multiply
    161,806.94x = 223,294.60 × 90,191.49
  4. Step 4: Simplify right side
    161,806.94x = 20,139,272,682.95
  5. Step 5: Solve for x
    x = 20,139,272,682.95/161,806.94
  6. Step 6: Final answer
    x = 124,464.83

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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.