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Finding the Fourth Proportional to 70,229,872.80, 105,344,809.20 and 57,464,791.20

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Solution

The fourth proportional to 70,229,872.80, 105,344,809.20 and 57,464,791.20 is: 86,197,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,229,872.80 : 105,344,809.20 = 57,464,791.20 : x
  2. Step 2: Convert to fraction form
    70,229,872.80/105,344,809.20 = 57,464,791.20/x
  3. Step 3: Cross multiply
    70,229,872.80x = 105,344,809.20 × 57,464,791.20
  4. Step 4: Simplify right side
    70,229,872.80x = 6,053,617,464,681,840
  5. Step 5: Solve for x
    x = 6,053,617,464,681,840/70,229,872.80
  6. Step 6: Final answer
    x = 86,197,186.80

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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.