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Finding the Fourth Proportional to 92,908, 128,215.38 and 50,466.52

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Solution

The fourth proportional to 92,908, 128,215.38 and 50,466.52 is: 69,645.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,908 : 128,215.38 = 50,466.52 : x
  2. Step 2: Convert to fraction form
    92,908/128,215.38 = 50,466.52/x
  3. Step 3: Cross multiply
    92,908x = 128,215.38 × 50,466.52
  4. Step 4: Simplify right side
    92,908x = 6,470,584,039.08
  5. Step 5: Solve for x
    x = 6,470,584,039.08/92,908
  6. Step 6: Final answer
    x = 69,645.07

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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.