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Finding the Fourth Proportional to 19,978,908.84, 27,570,894.26 and 10,811,551.59

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Solution

The fourth proportional to 19,978,908.84, 27,570,894.26 and 10,811,551.59 is: 14,919,941.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978,908.84 : 27,570,894.26 = 10,811,551.59 : x
  2. Step 2: Convert to fraction form
    19,978,908.84/27,570,894.26 = 10,811,551.59/x
  3. Step 3: Cross multiply
    19,978,908.84x = 27,570,894.26 × 10,811,551.59
  4. Step 4: Simplify right side
    19,978,908.84x = 298,084,145,620,367.12
  5. Step 5: Solve for x
    x = 298,084,145,620,367.12/19,978,908.84
  6. Step 6: Final answer
    x = 14,919,941.22

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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.