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Finding the Fourth Proportional to 64,513.60, 96,640.80 and 44,814.40

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Solution

The fourth proportional to 64,513.60, 96,640.80 and 44,814.40 is: 67,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,513.60 : 96,640.80 = 44,814.40 : x
  2. Step 2: Convert to fraction form
    64,513.60/96,640.80 = 44,814.40/x
  3. Step 3: Cross multiply
    64,513.60x = 96,640.80 × 44,814.40
  4. Step 4: Simplify right side
    64,513.60x = 4,330,899,467.52
  5. Step 5: Solve for x
    x = 4,330,899,467.52/64,513.60
  6. Step 6: Final answer
    x = 67,131.57

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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.