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Finding the Fourth Proportional to 56,366.64, 77,787.72 and 31,218.48

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Solution

The fourth proportional to 56,366.64, 77,787.72 and 31,218.48 is: 43,082.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,366.64 : 77,787.72 = 31,218.48 : x
  2. Step 2: Convert to fraction form
    56,366.64/77,787.72 = 31,218.48/x
  3. Step 3: Cross multiply
    56,366.64x = 77,787.72 × 31,218.48
  4. Step 4: Simplify right side
    56,366.64x = 2,428,414,381.07
  5. Step 5: Solve for x
    x = 2,428,414,381.07/56,366.64
  6. Step 6: Final answer
    x = 43,082.48

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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.