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Finding the Fourth Proportional to 68,678,689.60, 96,291,723.20 and 68,678,689.60

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Solution

The fourth proportional to 68,678,689.60, 96,291,723.20 and 68,678,689.60 is: 96,291,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,678,689.60 : 96,291,723.20 = 68,678,689.60 : x
  2. Step 2: Convert to fraction form
    68,678,689.60/96,291,723.20 = 68,678,689.60/x
  3. Step 3: Cross multiply
    68,678,689.60x = 96,291,723.20 × 68,678,689.60
  4. Step 4: Simplify right side
    68,678,689.60x = 6,613,189,368,701,918
  5. Step 5: Solve for x
    x = 6,613,189,368,701,918/68,678,689.60
  6. Step 6: Final answer
    x = 96,291,723.20

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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.