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Finding the Fourth Proportional to 58,782.72, 81,121.44 and 36,133.92

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Solution

The fourth proportional to 58,782.72, 81,121.44 and 36,133.92 is: 49,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,782.72 : 81,121.44 = 36,133.92 : x
  2. Step 2: Convert to fraction form
    58,782.72/81,121.44 = 36,133.92/x
  3. Step 3: Cross multiply
    58,782.72x = 81,121.44 × 36,133.92
  4. Step 4: Simplify right side
    58,782.72x = 2,931,235,623.24
  5. Step 5: Solve for x
    x = 2,931,235,623.24/58,782.72
  6. Step 6: Final answer
    x = 49,865.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.