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Finding the Fourth Proportional to 64,403.52, 96,621.12 and 52,035.68

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Solution

The fourth proportional to 64,403.52, 96,621.12 and 52,035.68 is: 78,066.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,403.52 : 96,621.12 = 52,035.68 : x
  2. Step 2: Convert to fraction form
    64,403.52/96,621.12 = 52,035.68/x
  3. Step 3: Cross multiply
    64,403.52x = 96,621.12 × 52,035.68
  4. Step 4: Simplify right side
    64,403.52x = 5,027,745,681.56
  5. Step 5: Solve for x
    x = 5,027,745,681.56/64,403.52
  6. Step 6: Final answer
    x = 78,066.32

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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.