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Finding the Fourth Proportional to 92,695.23, 139,053.78 and 69,469.29

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Solution

The fourth proportional to 92,695.23, 139,053.78 and 69,469.29 is: 104,212.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,695.23 : 139,053.78 = 69,469.29 : x
  2. Step 2: Convert to fraction form
    92,695.23/139,053.78 = 69,469.29/x
  3. Step 3: Cross multiply
    92,695.23x = 139,053.78 × 69,469.29
  4. Step 4: Simplify right side
    92,695.23x = 9,659,967,368.42
  5. Step 5: Solve for x
    x = 9,659,967,368.42/92,695.23
  6. Step 6: Final answer
    x = 104,212.13

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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.