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Finding the Fourth Proportional to 19,959,477.90, 29,939,216.85 and 17,940,002.10

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Solution

The fourth proportional to 19,959,477.90, 29,939,216.85 and 17,940,002.10 is: 26,910,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959,477.90 : 29,939,216.85 = 17,940,002.10 : x
  2. Step 2: Convert to fraction form
    19,959,477.90/29,939,216.85 = 17,940,002.10/x
  3. Step 3: Cross multiply
    19,959,477.90x = 29,939,216.85 × 17,940,002.10
  4. Step 4: Simplify right side
    19,959,477.90x = 537,109,613,161,355.44
  5. Step 5: Solve for x
    x = 537,109,613,161,355.44/19,959,477.90
  6. Step 6: Final answer
    x = 26,910,003.15

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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.