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Finding the Fourth Proportional to 64,419.49, 96,656.78 and 33,276.61

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Solution

The fourth proportional to 64,419.49, 96,656.78 and 33,276.61 is: 49,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,419.49 : 96,656.78 = 33,276.61 : x
  2. Step 2: Convert to fraction form
    64,419.49/96,656.78 = 33,276.61/x
  3. Step 3: Cross multiply
    64,419.49x = 96,656.78 × 33,276.61
  4. Step 4: Simplify right side
    64,419.49x = 3,216,409,971.92
  5. Step 5: Solve for x
    x = 3,216,409,971.92/64,419.49
  6. Step 6: Final answer
    x = 49,929.14

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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.