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Finding the Fourth Proportional to 92,765.97, 139,034.91 and 42,776.67

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Solution

The fourth proportional to 92,765.97, 139,034.91 and 42,776.67 is: 64,112.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,765.97 : 139,034.91 = 42,776.67 : x
  2. Step 2: Convert to fraction form
    92,765.97/139,034.91 = 42,776.67/x
  3. Step 3: Cross multiply
    92,765.97x = 139,034.91 × 42,776.67
  4. Step 4: Simplify right side
    92,765.97x = 5,947,450,463.55
  5. Step 5: Solve for x
    x = 5,947,450,463.55/92,765.97
  6. Step 6: Final answer
    x = 64,112.42

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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.