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Finding the Fourth Proportional to 125,264.32, 172,864.72 and 68,674.48

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Solution

The fourth proportional to 125,264.32, 172,864.72 and 68,674.48 is: 94,770.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,264.32 : 172,864.72 = 68,674.48 : x
  2. Step 2: Convert to fraction form
    125,264.32/172,864.72 = 68,674.48/x
  3. Step 3: Cross multiply
    125,264.32x = 172,864.72 × 68,674.48
  4. Step 4: Simplify right side
    125,264.32x = 11,871,394,756.35
  5. Step 5: Solve for x
    x = 11,871,394,756.35/125,264.32
  6. Step 6: Final answer
    x = 94,770.76

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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.