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Finding the Fourth Proportional to 73,283.72, 109,915.62 and 20,697.44

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Solution

The fourth proportional to 73,283.72, 109,915.62 and 20,697.44 is: 31,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,283.72 : 109,915.62 = 20,697.44 : x
  2. Step 2: Convert to fraction form
    73,283.72/109,915.62 = 20,697.44/x
  3. Step 3: Cross multiply
    73,283.72x = 109,915.62 × 20,697.44
  4. Step 4: Simplify right side
    73,283.72x = 2,274,971,950.01
  5. Step 5: Solve for x
    x = 2,274,971,950.01/73,283.72
  6. Step 6: Final answer
    x = 31,043.35

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1.5x scale

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.