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Finding the Fourth Proportional to 98,769.96, 136,364.85 and 68,545.62

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Solution

The fourth proportional to 98,769.96, 136,364.85 and 68,545.62 is: 94,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,769.96 : 136,364.85 = 68,545.62 : x
  2. Step 2: Convert to fraction form
    98,769.96/136,364.85 = 68,545.62/x
  3. Step 3: Cross multiply
    98,769.96x = 136,364.85 × 68,545.62
  4. Step 4: Simplify right side
    98,769.96x = 9,347,213,189.46
  5. Step 5: Solve for x
    x = 9,347,213,189.46/98,769.96
  6. Step 6: Final answer
    x = 94,636.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.