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Finding the Fourth Proportional to 68,707.92, 102,927.69 and 47,356.82

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Solution

The fourth proportional to 68,707.92, 102,927.69 and 47,356.82 is: 70,942.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.92 : 102,927.69 = 47,356.82 : x
  2. Step 2: Convert to fraction form
    68,707.92/102,927.69 = 47,356.82/x
  3. Step 3: Cross multiply
    68,707.92x = 102,927.69 × 47,356.82
  4. Step 4: Simplify right side
    68,707.92x = 4,874,328,088.35
  5. Step 5: Solve for x
    x = 4,874,328,088.35/68,707.92
  6. Step 6: Final answer
    x = 70,942.74

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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.