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Finding the Fourth Proportional to 6,600,666.80, 9,899,617.80 and 3,237,287.60

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Solution

The fourth proportional to 6,600,666.80, 9,899,617.80 and 3,237,287.60 is: 4,855,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600,666.80 : 9,899,617.80 = 3,237,287.60 : x
  2. Step 2: Convert to fraction form
    6,600,666.80/9,899,617.80 = 3,237,287.60/x
  3. Step 3: Cross multiply
    6,600,666.80x = 9,899,617.80 × 3,237,287.60
  4. Step 4: Simplify right side
    6,600,666.80x = 32,047,909,948,679.29
  5. Step 5: Solve for x
    x = 32,047,909,948,679.29/6,600,666.80
  6. Step 6: Final answer
    x = 4,855,253.40

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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.