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Finding the Fourth Proportional to 12,458,537.10, 18,687,805.65 and 12,458,537.10

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Solution

The fourth proportional to 12,458,537.10, 18,687,805.65 and 12,458,537.10 is: 18,687,805.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,537.10 : 18,687,805.65 = 12,458,537.10 : x
  2. Step 2: Convert to fraction form
    12,458,537.10/18,687,805.65 = 12,458,537.10/x
  3. Step 3: Cross multiply
    12,458,537.10x = 18,687,805.65 × 12,458,537.10
  4. Step 4: Simplify right side
    12,458,537.10x = 232,822,720,008,114.59
  5. Step 5: Solve for x
    x = 232,822,720,008,114.59/12,458,537.10
  6. Step 6: Final answer
    x = 18,687,805.65

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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.