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Finding the Fourth Proportional to 92,791.17, 139,186.69 and 53,323.11

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Solution

The fourth proportional to 92,791.17, 139,186.69 and 53,323.11 is: 79,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,791.17 : 139,186.69 = 53,323.11 : x
  2. Step 2: Convert to fraction form
    92,791.17/139,186.69 = 53,323.11/x
  3. Step 3: Cross multiply
    92,791.17x = 139,186.69 × 53,323.11
  4. Step 4: Simplify right side
    92,791.17x = 7,421,867,048.10
  5. Step 5: Solve for x
    x = 7,421,867,048.10/92,791.17
  6. Step 6: Final answer
    x = 79,984.63

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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.