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Finding the Fourth Proportional to 64,621.40, 96,879.81 and 29,056.68

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Solution

The fourth proportional to 64,621.40, 96,879.81 and 29,056.68 is: 43,561.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,621.40 : 96,879.81 = 29,056.68 : x
  2. Step 2: Convert to fraction form
    64,621.40/96,879.81 = 29,056.68/x
  3. Step 3: Cross multiply
    64,621.40x = 96,879.81 × 29,056.68
  4. Step 4: Simplify right side
    64,621.40x = 2,815,005,637.63
  5. Step 5: Solve for x
    x = 2,815,005,637.63/64,621.40
  6. Step 6: Final answer
    x = 43,561.51

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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.