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Finding the Fourth Proportional to 68,857,513.10, 103,286,269.65 and 68,857,513.10

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Solution

The fourth proportional to 68,857,513.10, 103,286,269.65 and 68,857,513.10 is: 103,286,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,857,513.10 : 103,286,269.65 = 68,857,513.10 : x
  2. Step 2: Convert to fraction form
    68,857,513.10/103,286,269.65 = 68,857,513.10/x
  3. Step 3: Cross multiply
    68,857,513.10x = 103,286,269.65 × 68,857,513.10
  4. Step 4: Simplify right side
    68,857,513.10x = 7,112,035,665,475,007
  5. Step 5: Solve for x
    x = 7,112,035,665,475,007/68,857,513.10
  6. Step 6: Final answer
    x = 103,286,269.65

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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.