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Finding the Fourth Proportional to 18,917,797.10, 28,376,696.01 and 4,540,864.91

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Solution

The fourth proportional to 18,917,797.10, 28,376,696.01 and 4,540,864.91 is: 6,811,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917,797.10 : 28,376,696.01 = 4,540,864.91 : x
  2. Step 2: Convert to fraction form
    18,917,797.10/28,376,696.01 = 4,540,864.91/x
  3. Step 3: Cross multiply
    18,917,797.10x = 28,376,696.01 × 4,540,864.91
  4. Step 4: Simplify right side
    18,917,797.10x = 128,854,743,031,662.55
  5. Step 5: Solve for x
    x = 128,854,743,031,662.55/18,917,797.10
  6. Step 6: Final answer
    x = 6,811,297.45

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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.