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Finding the Fourth Proportional to 6,648,546.80, 9,972,820.20 and 6,606,556.40

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Solution

The fourth proportional to 6,648,546.80, 9,972,820.20 and 6,606,556.40 is: 9,909,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648,546.80 : 9,972,820.20 = 6,606,556.40 : x
  2. Step 2: Convert to fraction form
    6,648,546.80/9,972,820.20 = 6,606,556.40/x
  3. Step 3: Cross multiply
    6,648,546.80x = 9,972,820.20 × 6,606,556.40
  4. Step 4: Simplify right side
    6,648,546.80x = 65,885,999,118,359.28
  5. Step 5: Solve for x
    x = 65,885,999,118,359.28/6,648,546.80
  6. Step 6: Final answer
    x = 9,909,834.60

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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.