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Finding the Fourth Proportional to 73,937.81, 110,915.91 and 28,953.36

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Solution

The fourth proportional to 73,937.81, 110,915.91 and 28,953.36 is: 43,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,937.81 : 110,915.91 = 28,953.36 : x
  2. Step 2: Convert to fraction form
    73,937.81/110,915.91 = 28,953.36/x
  3. Step 3: Cross multiply
    73,937.81x = 110,915.91 × 28,953.36
  4. Step 4: Simplify right side
    73,937.81x = 3,211,388,271.96
  5. Step 5: Solve for x
    x = 3,211,388,271.96/73,937.81
  6. Step 6: Final answer
    x = 43,433.64

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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.