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Finding the Fourth Proportional to 22,988,905.20, 34,483,357.80 and 20,863,141.20

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Solution

The fourth proportional to 22,988,905.20, 34,483,357.80 and 20,863,141.20 is: 31,294,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,988,905.20 : 34,483,357.80 = 20,863,141.20 : x
  2. Step 2: Convert to fraction form
    22,988,905.20/34,483,357.80 = 20,863,141.20/x
  3. Step 3: Cross multiply
    22,988,905.20x = 34,483,357.80 × 20,863,141.20
  4. Step 4: Simplify right side
    22,988,905.20x = 719,431,162,831,521.25
  5. Step 5: Solve for x
    x = 719,431,162,831,521.25/22,988,905.20
  6. Step 6: Final answer
    x = 31,294,711.80

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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.