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Finding the Fourth Proportional to 6,642,758.80, 9,964,138.20 and 2,383,357.60

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Solution

The fourth proportional to 6,642,758.80, 9,964,138.20 and 2,383,357.60 is: 3,575,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,758.80 : 9,964,138.20 = 2,383,357.60 : x
  2. Step 2: Convert to fraction form
    6,642,758.80/9,964,138.20 = 2,383,357.60/x
  3. Step 3: Cross multiply
    6,642,758.80x = 9,964,138.20 × 2,383,357.60
  4. Step 4: Simplify right side
    6,642,758.80x = 23,748,104,506,420.32
  5. Step 5: Solve for x
    x = 23,748,104,506,420.32/6,642,758.80
  6. Step 6: Final answer
    x = 3,575,036.40

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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.