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Finding the Fourth Proportional to 62,935.76, 94,409.52 and 20,816

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Solution

The fourth proportional to 62,935.76, 94,409.52 and 20,816 is: 31,225.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,935.76 : 94,409.52 = 20,816 : x
  2. Step 2: Convert to fraction form
    62,935.76/94,409.52 = 20,816/x
  3. Step 3: Cross multiply
    62,935.76x = 94,409.52 × 20,816
  4. Step 4: Simplify right side
    62,935.76x = 1,965,228,568.32
  5. Step 5: Solve for x
    x = 1,965,228,568.32/62,935.76
  6. Step 6: Final answer
    x = 31,225.94

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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.