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Finding the Fourth Proportional to 64,831, 97,275.78 and 37,129

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Solution

The fourth proportional to 64,831, 97,275.78 and 37,129 is: 55,710.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,831 : 97,275.78 = 37,129 : x
  2. Step 2: Convert to fraction form
    64,831/97,275.78 = 37,129/x
  3. Step 3: Cross multiply
    64,831x = 97,275.78 × 37,129
  4. Step 4: Simplify right side
    64,831x = 3,611,752,435.62
  5. Step 5: Solve for x
    x = 3,611,752,435.62/64,831
  6. Step 6: Final answer
    x = 55,710.27

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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.