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Finding the Fourth Proportional to 92,905.35, 139,314.87 and 45,522.78

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Solution

The fourth proportional to 92,905.35, 139,314.87 and 45,522.78 is: 68,263.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,905.35 : 139,314.87 = 45,522.78 : x
  2. Step 2: Convert to fraction form
    92,905.35/139,314.87 = 45,522.78/x
  3. Step 3: Cross multiply
    92,905.35x = 139,314.87 × 45,522.78
  4. Step 4: Simplify right side
    92,905.35x = 6,342,000,177.74
  5. Step 5: Solve for x
    x = 6,342,000,177.74/92,905.35
  6. Step 6: Final answer
    x = 68,263.02

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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.