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Finding the Fourth Proportional to 68,719.90, 96,346.10 and 68,719.90

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Solution

The fourth proportional to 68,719.90, 96,346.10 and 68,719.90 is: 96,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,719.90 : 96,346.10 = 68,719.90 : x
  2. Step 2: Convert to fraction form
    68,719.90/96,346.10 = 68,719.90/x
  3. Step 3: Cross multiply
    68,719.90x = 96,346.10 × 68,719.90
  4. Step 4: Simplify right side
    68,719.90x = 6,620,894,357.39
  5. Step 5: Solve for x
    x = 6,620,894,357.39/68,719.90
  6. Step 6: Final answer
    x = 96,346.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.