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Finding the Fourth Proportional to 123,032.40, 169,788.20 and 69,314.42

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Solution

The fourth proportional to 123,032.40, 169,788.20 and 69,314.42 is: 95,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,032.40 : 169,788.20 = 69,314.42 : x
  2. Step 2: Convert to fraction form
    123,032.40/169,788.20 = 69,314.42/x
  3. Step 3: Cross multiply
    123,032.40x = 169,788.20 × 69,314.42
  4. Step 4: Simplify right side
    123,032.40x = 11,768,769,410.33
  5. Step 5: Solve for x
    x = 11,768,769,410.33/123,032.40
  6. Step 6: Final answer
    x = 95,655.85

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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.