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Finding the Fourth Proportional to 15,926,963.04, 21,978,575.82 and 9,402,694.11

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Solution

The fourth proportional to 15,926,963.04, 21,978,575.82 and 9,402,694.11 is: 12,975,344.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,926,963.04 : 21,978,575.82 = 9,402,694.11 : x
  2. Step 2: Convert to fraction form
    15,926,963.04/21,978,575.82 = 9,402,694.11/x
  3. Step 3: Cross multiply
    15,926,963.04x = 21,978,575.82 × 9,402,694.11
  4. Step 4: Simplify right side
    15,926,963.04x = 206,657,825,408,902.41
  5. Step 5: Solve for x
    x = 206,657,825,408,902.41/15,926,963.04
  6. Step 6: Final answer
    x = 12,975,344.07

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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.