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Finding the Fourth Proportional to 8,762,744.80, 13,121,998.80 and 5,754,642.40

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Solution

The fourth proportional to 8,762,744.80, 13,121,998.80 and 5,754,642.40 is: 8,617,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762,744.80 : 13,121,998.80 = 5,754,642.40 : x
  2. Step 2: Convert to fraction form
    8,762,744.80/13,121,998.80 = 5,754,642.40/x
  3. Step 3: Cross multiply
    8,762,744.80x = 13,121,998.80 × 5,754,642.40
  4. Step 4: Simplify right side
    8,762,744.80x = 75,512,410,667,229.12
  5. Step 5: Solve for x
    x = 75,512,410,667,229.12/8,762,744.80
  6. Step 6: Final answer
    x = 8,617,438.07

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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.