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Finding the Fourth Proportional to 48,995.85, 73,521.45 and 20,913.24

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Solution

The fourth proportional to 48,995.85, 73,521.45 and 20,913.24 is: 31,381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,995.85 : 73,521.45 = 20,913.24 : x
  2. Step 2: Convert to fraction form
    48,995.85/73,521.45 = 20,913.24/x
  3. Step 3: Cross multiply
    48,995.85x = 73,521.45 × 20,913.24
  4. Step 4: Simplify right side
    48,995.85x = 1,537,571,729.00
  5. Step 5: Solve for x
    x = 1,537,571,729.00/48,995.85
  6. Step 6: Final answer
    x = 31,381.67

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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.