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Finding the Fourth Proportional to 28,187,464.90, 39,542,077.10 and 28,187,464.90

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Solution

The fourth proportional to 28,187,464.90, 39,542,077.10 and 28,187,464.90 is: 39,542,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187,464.90 : 39,542,077.10 = 28,187,464.90 : x
  2. Step 2: Convert to fraction form
    28,187,464.90/39,542,077.10 = 28,187,464.90/x
  3. Step 3: Cross multiply
    28,187,464.90x = 39,542,077.10 × 28,187,464.90
  4. Step 4: Simplify right side
    28,187,464.90x = 1,114,590,910,329,343.75
  5. Step 5: Solve for x
    x = 1,114,590,910,329,343.75/28,187,464.90
  6. Step 6: Final answer
    x = 39,542,077.10

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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.