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Finding the Fourth Proportional to 64,224.40, 96,336.60 and 53,165.20

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Solution

The fourth proportional to 64,224.40, 96,336.60 and 53,165.20 is: 79,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,224.40 : 96,336.60 = 53,165.20 : x
  2. Step 2: Convert to fraction form
    64,224.40/96,336.60 = 53,165.20/x
  3. Step 3: Cross multiply
    64,224.40x = 96,336.60 × 53,165.20
  4. Step 4: Simplify right side
    64,224.40x = 5,121,754,606.32
  5. Step 5: Solve for x
    x = 5,121,754,606.32/64,224.40
  6. Step 6: Final answer
    x = 79,747.80

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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.