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Finding the Fourth Proportional to 70,803.65, 106,204.50 and 28,683.38

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Solution

The fourth proportional to 70,803.65, 106,204.50 and 28,683.38 is: 43,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.65 : 106,204.50 = 28,683.38 : x
  2. Step 2: Convert to fraction form
    70,803.65/106,204.50 = 28,683.38/x
  3. Step 3: Cross multiply
    70,803.65x = 106,204.50 × 28,683.38
  4. Step 4: Simplify right side
    70,803.65x = 3,046,304,296.72
  5. Step 5: Solve for x
    x = 3,046,304,296.72/70,803.65
  6. Step 6: Final answer
    x = 43,024.68

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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.