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Finding the Fourth Proportional to 92,908.71, 128,211.30 and 50,467.14

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Solution

The fourth proportional to 92,908.71, 128,211.30 and 50,467.14 is: 69,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,908.71 : 128,211.30 = 50,467.14 : x
  2. Step 2: Convert to fraction form
    92,908.71/128,211.30 = 50,467.14/x
  3. Step 3: Cross multiply
    92,908.71x = 128,211.30 × 50,467.14
  4. Step 4: Simplify right side
    92,908.71x = 6,470,457,626.68
  5. Step 5: Solve for x
    x = 6,470,457,626.68/92,908.71
  6. Step 6: Final answer
    x = 69,643.18

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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.