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Finding the Fourth Proportional to 80,621.76, 111,266.28 and 46,632

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Solution

The fourth proportional to 80,621.76, 111,266.28 and 46,632 is: 64,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,621.76 : 111,266.28 = 46,632 : x
  2. Step 2: Convert to fraction form
    80,621.76/111,266.28 = 46,632/x
  3. Step 3: Cross multiply
    80,621.76x = 111,266.28 × 46,632
  4. Step 4: Simplify right side
    80,621.76x = 5,188,569,168.96
  5. Step 5: Solve for x
    x = 5,188,569,168.96/80,621.76
  6. Step 6: Final answer
    x = 64,356.93

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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.