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Finding the Fourth Proportional to 14,581,261.20, 21,871,891.80 and 12,242,920.80

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Solution

The fourth proportional to 14,581,261.20, 21,871,891.80 and 12,242,920.80 is: 18,364,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581,261.20 : 21,871,891.80 = 12,242,920.80 : x
  2. Step 2: Convert to fraction form
    14,581,261.20/21,871,891.80 = 12,242,920.80/x
  3. Step 3: Cross multiply
    14,581,261.20x = 21,871,891.80 × 12,242,920.80
  4. Step 4: Simplify right side
    14,581,261.20x = 267,775,839,053,569.47
  5. Step 5: Solve for x
    x = 267,775,839,053,569.47/14,581,261.20
  6. Step 6: Final answer
    x = 18,364,381.20

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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.