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Finding the Fourth Proportional to 92,960.40, 139,425.92 and 40,355.76

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Solution

The fourth proportional to 92,960.40, 139,425.92 and 40,355.76 is: 60,527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,960.40 : 139,425.92 = 40,355.76 : x
  2. Step 2: Convert to fraction form
    92,960.40/139,425.92 = 40,355.76/x
  3. Step 3: Cross multiply
    92,960.40x = 139,425.92 × 40,355.76
  4. Step 4: Simplify right side
    92,960.40x = 5,626,638,965.30
  5. Step 5: Solve for x
    x = 5,626,638,965.30/92,960.40
  6. Step 6: Final answer
    x = 60,527.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.