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Finding the Fourth Proportional to 64,345.78, 96,387.27 and 33,115.42

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Solution

The fourth proportional to 64,345.78, 96,387.27 and 33,115.42 is: 49,605.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,345.78 : 96,387.27 = 33,115.42 : x
  2. Step 2: Convert to fraction form
    64,345.78/96,387.27 = 33,115.42/x
  3. Step 3: Cross multiply
    64,345.78x = 96,387.27 × 33,115.42
  4. Step 4: Simplify right side
    64,345.78x = 3,191,904,928.70
  5. Step 5: Solve for x
    x = 3,191,904,928.70/64,345.78
  6. Step 6: Final answer
    x = 49,605.51

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1.5x scale

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.