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Finding the Fourth Proportional to 10,652,021.90, 15,978,032.85 and 4,263,260.30

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Solution

The fourth proportional to 10,652,021.90, 15,978,032.85 and 4,263,260.30 is: 6,394,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652,021.90 : 15,978,032.85 = 4,263,260.30 : x
  2. Step 2: Convert to fraction form
    10,652,021.90/15,978,032.85 = 4,263,260.30/x
  3. Step 3: Cross multiply
    10,652,021.90x = 15,978,032.85 × 4,263,260.30
  4. Step 4: Simplify right side
    10,652,021.90x = 68,118,513,121,500.85
  5. Step 5: Solve for x
    x = 68,118,513,121,500.85/10,652,021.90
  6. Step 6: Final answer
    x = 6,394,890.45

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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.