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Finding the Fourth Proportional to 125,478.67, 173,501.16 and 123,450.61

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Solution

The fourth proportional to 125,478.67, 173,501.16 and 123,450.61 is: 170,696.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,478.67 : 173,501.16 = 123,450.61 : x
  2. Step 2: Convert to fraction form
    125,478.67/173,501.16 = 123,450.61/x
  3. Step 3: Cross multiply
    125,478.67x = 173,501.16 × 123,450.61
  4. Step 4: Simplify right side
    125,478.67x = 21,418,824,019.97
  5. Step 5: Solve for x
    x = 21,418,824,019.97/125,478.67
  6. Step 6: Final answer
    x = 170,696.93

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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.