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Finding the Fourth Proportional to 16,968,978.09, 23,417,682.57 and 9,234,519.21

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Solution

The fourth proportional to 16,968,978.09, 23,417,682.57 and 9,234,519.21 is: 12,743,904.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,968,978.09 : 23,417,682.57 = 9,234,519.21 : x
  2. Step 2: Convert to fraction form
    16,968,978.09/23,417,682.57 = 9,234,519.21/x
  3. Step 3: Cross multiply
    16,968,978.09x = 23,417,682.57 × 9,234,519.21
  4. Step 4: Simplify right side
    16,968,978.09x = 216,251,039,546,347.19
  5. Step 5: Solve for x
    x = 216,251,039,546,347.19/16,968,978.09
  6. Step 6: Final answer
    x = 12,743,904.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.