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Finding the Fourth Proportional to 56,393.90, 77,822.55 and 33,439.17

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Solution

The fourth proportional to 56,393.90, 77,822.55 and 33,439.17 is: 46,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,393.90 : 77,822.55 = 33,439.17 : x
  2. Step 2: Convert to fraction form
    56,393.90/77,822.55 = 33,439.17/x
  3. Step 3: Cross multiply
    56,393.90x = 77,822.55 × 33,439.17
  4. Step 4: Simplify right side
    56,393.90x = 2,602,321,833.96
  5. Step 5: Solve for x
    x = 2,602,321,833.96/56,393.90
  6. Step 6: Final answer
    x = 46,145.45

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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.