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Finding the Fourth Proportional to 64,908.40, 89,552.60 and 36,223.40

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Solution

The fourth proportional to 64,908.40, 89,552.60 and 36,223.40 is: 49,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,908.40 : 89,552.60 = 36,223.40 : x
  2. Step 2: Convert to fraction form
    64,908.40/89,552.60 = 36,223.40/x
  3. Step 3: Cross multiply
    64,908.40x = 89,552.60 × 36,223.40
  4. Step 4: Simplify right side
    64,908.40x = 3,243,899,650.84
  5. Step 5: Solve for x
    x = 3,243,899,650.84/64,908.40
  6. Step 6: Final answer
    x = 49,976.58

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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.