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Finding the Fourth Proportional to 14,652,031.80, 21,978,047.70 and 11,817,679.80

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Solution

The fourth proportional to 14,652,031.80, 21,978,047.70 and 11,817,679.80 is: 17,726,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652,031.80 : 21,978,047.70 = 11,817,679.80 : x
  2. Step 2: Convert to fraction form
    14,652,031.80/21,978,047.70 = 11,817,679.80/x
  3. Step 3: Cross multiply
    14,652,031.80x = 21,978,047.70 × 11,817,679.80
  4. Step 4: Simplify right side
    14,652,031.80x = 259,729,530,347,726.47
  5. Step 5: Solve for x
    x = 259,729,530,347,726.47/14,652,031.80
  6. Step 6: Final answer
    x = 17,726,519.70

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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.