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Finding the Fourth Proportional to 52,643.52, 78,874.56 and 37,781.64

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Solution

The fourth proportional to 52,643.52, 78,874.56 and 37,781.64 is: 56,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,643.52 : 78,874.56 = 37,781.64 : x
  2. Step 2: Convert to fraction form
    52,643.52/78,874.56 = 37,781.64/x
  3. Step 3: Cross multiply
    52,643.52x = 78,874.56 × 37,781.64
  4. Step 4: Simplify right side
    52,643.52x = 2,980,010,231.08
  5. Step 5: Solve for x
    x = 2,980,010,231.08/52,643.52
  6. Step 6: Final answer
    x = 56,607.35

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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.