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Finding the Fourth Proportional to 64,429.02, 88,911.86 and 36,135.32

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Solution

The fourth proportional to 64,429.02, 88,911.86 and 36,135.32 is: 49,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,429.02 : 88,911.86 = 36,135.32 : x
  2. Step 2: Convert to fraction form
    64,429.02/88,911.86 = 36,135.32/x
  3. Step 3: Cross multiply
    64,429.02x = 88,911.86 × 36,135.32
  4. Step 4: Simplify right side
    64,429.02x = 3,212,857,887.66
  5. Step 5: Solve for x
    x = 3,212,857,887.66/64,429.02
  6. Step 6: Final answer
    x = 49,866.63

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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.