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Finding the Fourth Proportional to 91,960, 126,905.04 and 52,216

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Solution

The fourth proportional to 91,960, 126,905.04 and 52,216 is: 72,058.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,960 : 126,905.04 = 52,216 : x
  2. Step 2: Convert to fraction form
    91,960/126,905.04 = 52,216/x
  3. Step 3: Cross multiply
    91,960x = 126,905.04 × 52,216
  4. Step 4: Simplify right side
    91,960x = 6,626,473,568.64
  5. Step 5: Solve for x
    x = 6,626,473,568.64/91,960
  6. Step 6: Final answer
    x = 72,058.22

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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.