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Finding the Fourth Proportional to 18,611,891.10, 27,854,851.05 and 18,611,891.10

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Solution

The fourth proportional to 18,611,891.10, 27,854,851.05 and 18,611,891.10 is: 27,854,851.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611,891.10 : 27,854,851.05 = 18,611,891.10 : x
  2. Step 2: Convert to fraction form
    18,611,891.10/27,854,851.05 = 18,611,891.10/x
  3. Step 3: Cross multiply
    18,611,891.10x = 27,854,851.05 × 18,611,891.10
  4. Step 4: Simplify right side
    18,611,891.10x = 518,431,454,349,320.69
  5. Step 5: Solve for x
    x = 518,431,454,349,320.69/18,611,891.10
  6. Step 6: Final answer
    x = 27,854,851.05

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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.