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Finding the Fourth Proportional to 123,187.30, 169,998.51 and 66,598.67

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Solution

The fourth proportional to 123,187.30, 169,998.51 and 66,598.67 is: 91,906.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,187.30 : 169,998.51 = 66,598.67 : x
  2. Step 2: Convert to fraction form
    123,187.30/169,998.51 = 66,598.67/x
  3. Step 3: Cross multiply
    123,187.30x = 169,998.51 × 66,598.67
  4. Step 4: Simplify right side
    123,187.30x = 11,321,675,342.72
  5. Step 5: Solve for x
    x = 11,321,675,342.72/123,187.30
  6. Step 6: Final answer
    x = 91,906.19

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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.