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Finding the Fourth Proportional to 20,061,959.51, 27,693,978.98 and 13,544,416.82

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Solution

The fourth proportional to 20,061,959.51, 27,693,978.98 and 13,544,416.82 is: 18,697,016.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061,959.51 : 27,693,978.98 = 13,544,416.82 : x
  2. Step 2: Convert to fraction form
    20,061,959.51/27,693,978.98 = 13,544,416.82/x
  3. Step 3: Cross multiply
    20,061,959.51x = 27,693,978.98 × 13,544,416.82
  4. Step 4: Simplify right side
    20,061,959.51x = 375,098,794,710,951.31
  5. Step 5: Solve for x
    x = 375,098,794,710,951.31/20,061,959.51
  6. Step 6: Final answer
    x = 18,697,016.83

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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.