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Finding the Fourth Proportional to 16,697,644.71, 25,028,986.06 and 6,987,820.91

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Solution

The fourth proportional to 16,697,644.71, 25,028,986.06 and 6,987,820.91 is: 10,474,415.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,697,644.71 : 25,028,986.06 = 6,987,820.91 : x
  2. Step 2: Convert to fraction form
    16,697,644.71/25,028,986.06 = 6,987,820.91/x
  3. Step 3: Cross multiply
    16,697,644.71x = 25,028,986.06 × 6,987,820.91
  4. Step 4: Simplify right side
    16,697,644.71x = 174,898,072,146,166.50
  5. Step 5: Solve for x
    x = 174,898,072,146,166.50/16,697,644.71
  6. Step 6: Final answer
    x = 10,474,415.71

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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.