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Finding the Fourth Proportional to 56,112.64, 77,400.96 and 33,436

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Solution

The fourth proportional to 56,112.64, 77,400.96 and 33,436 is: 46,121.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,112.64 : 77,400.96 = 33,436 : x
  2. Step 2: Convert to fraction form
    56,112.64/77,400.96 = 33,436/x
  3. Step 3: Cross multiply
    56,112.64x = 77,400.96 × 33,436
  4. Step 4: Simplify right side
    56,112.64x = 2,587,978,498.56
  5. Step 5: Solve for x
    x = 2,587,978,498.56/56,112.64
  6. Step 6: Final answer
    x = 46,121.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.