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Finding the Fourth Proportional to 56,313.68, 77,699.78 and 33,660

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Solution

The fourth proportional to 56,313.68, 77,699.78 and 33,660 is: 46,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,313.68 : 77,699.78 = 33,660 : x
  2. Step 2: Convert to fraction form
    56,313.68/77,699.78 = 33,660/x
  3. Step 3: Cross multiply
    56,313.68x = 77,699.78 × 33,660
  4. Step 4: Simplify right side
    56,313.68x = 2,615,374,594.80
  5. Step 5: Solve for x
    x = 2,615,374,594.80/56,313.68
  6. Step 6: Final answer
    x = 46,442.97

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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.