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Finding the Fourth Proportional to 8,074,772.80, 12,118,768.80 and 8,011,787.20

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Solution

The fourth proportional to 8,074,772.80, 12,118,768.80 and 8,011,787.20 is: 12,024,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074,772.80 : 12,118,768.80 = 8,011,787.20 : x
  2. Step 2: Convert to fraction form
    8,074,772.80/12,118,768.80 = 8,011,787.20/x
  3. Step 3: Cross multiply
    8,074,772.80x = 12,118,768.80 × 8,011,787.20
  4. Step 4: Simplify right side
    8,074,772.80x = 97,092,996,751,599.38
  5. Step 5: Solve for x
    x = 97,092,996,751,599.38/8,074,772.80
  6. Step 6: Final answer
    x = 12,024,238.84

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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.