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Finding the Fourth Proportional to 68,821.46, 103,162.47 and 46,637.08

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Solution

The fourth proportional to 68,821.46, 103,162.47 and 46,637.08 is: 69,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,821.46 : 103,162.47 = 46,637.08 : x
  2. Step 2: Convert to fraction form
    68,821.46/103,162.47 = 46,637.08/x
  3. Step 3: Cross multiply
    68,821.46x = 103,162.47 × 46,637.08
  4. Step 4: Simplify right side
    68,821.46x = 4,811,196,366.39
  5. Step 5: Solve for x
    x = 4,811,196,366.39/68,821.46
  6. Step 6: Final answer
    x = 69,908.37

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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.