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Finding the Fourth Proportional to 20,762,469.10, 31,143,703.65 and 20,762,469.10

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Solution

The fourth proportional to 20,762,469.10, 31,143,703.65 and 20,762,469.10 is: 31,143,703.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,469.10 : 31,143,703.65 = 20,762,469.10 : x
  2. Step 2: Convert to fraction form
    20,762,469.10/31,143,703.65 = 20,762,469.10/x
  3. Step 3: Cross multiply
    20,762,469.10x = 31,143,703.65 × 20,762,469.10
  4. Step 4: Simplify right side
    20,762,469.10x = 646,620,184,692,682.25
  5. Step 5: Solve for x
    x = 646,620,184,692,682.25/20,762,469.10
  6. Step 6: Final answer
    x = 31,143,703.65

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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.