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Finding the Fourth Proportional to 8,986,553.60, 13,479,830.40 and 5,585,331.20

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Solution

The fourth proportional to 8,986,553.60, 13,479,830.40 and 5,585,331.20 is: 8,377,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986,553.60 : 13,479,830.40 = 5,585,331.20 : x
  2. Step 2: Convert to fraction form
    8,986,553.60/13,479,830.40 = 5,585,331.20/x
  3. Step 3: Cross multiply
    8,986,553.60x = 13,479,830.40 × 5,585,331.20
  4. Step 4: Simplify right side
    8,986,553.60x = 75,289,317,303,828.48
  5. Step 5: Solve for x
    x = 75,289,317,303,828.48/8,986,553.60
  6. Step 6: Final answer
    x = 8,377,996.80

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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.