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Finding the Fourth Proportional to 92,642.63, 139,149.90 and 55,275.62

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Solution

The fourth proportional to 92,642.63, 139,149.90 and 55,275.62 is: 83,024.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,642.63 : 139,149.90 = 55,275.62 : x
  2. Step 2: Convert to fraction form
    92,642.63/139,149.90 = 55,275.62/x
  3. Step 3: Cross multiply
    92,642.63x = 139,149.90 × 55,275.62
  4. Step 4: Simplify right side
    92,642.63x = 7,691,596,299.69
  5. Step 5: Solve for x
    x = 7,691,596,299.69/92,642.63
  6. Step 6: Final answer
    x = 83,024.38

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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.