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Finding the Fourth Proportional to 16,697,645.71, 25,028,987.56 and 6,987,821.91

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Solution

The fourth proportional to 16,697,645.71, 25,028,987.56 and 6,987,821.91 is: 10,474,417.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,697,645.71 : 25,028,987.56 = 6,987,821.91 : x
  2. Step 2: Convert to fraction form
    16,697,645.71/25,028,987.56 = 6,987,821.91/x
  3. Step 3: Cross multiply
    16,697,645.71x = 25,028,987.56 × 6,987,821.91
  4. Step 4: Simplify right side
    16,697,645.71x = 174,898,107,656,885.44
  5. Step 5: Solve for x
    x = 174,898,107,656,885.44/16,697,645.71
  6. Step 6: Final answer
    x = 10,474,417.21

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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.