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Finding the Fourth Proportional to 125,034.72, 172,548.12 and 67,674.07

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Solution

The fourth proportional to 125,034.72, 172,548.12 and 67,674.07 is: 93,390.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,034.72 : 172,548.12 = 67,674.07 : x
  2. Step 2: Convert to fraction form
    125,034.72/172,548.12 = 67,674.07/x
  3. Step 3: Cross multiply
    125,034.72x = 172,548.12 × 67,674.07
  4. Step 4: Simplify right side
    125,034.72x = 11,677,033,551.25
  5. Step 5: Solve for x
    x = 11,677,033,551.25/125,034.72
  6. Step 6: Final answer
    x = 93,390.33

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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.