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Finding the Fourth Proportional to 92,720.94, 139,079.97 and 37,315.50

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Solution

The fourth proportional to 92,720.94, 139,079.97 and 37,315.50 is: 55,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,720.94 : 139,079.97 = 37,315.50 : x
  2. Step 2: Convert to fraction form
    92,720.94/139,079.97 = 37,315.50/x
  3. Step 3: Cross multiply
    92,720.94x = 139,079.97 × 37,315.50
  4. Step 4: Simplify right side
    92,720.94x = 5,189,838,620.54
  5. Step 5: Solve for x
    x = 5,189,838,620.54/92,720.94
  6. Step 6: Final answer
    x = 55,972.67

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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.