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Finding the Fourth Proportional to 56,960.64, 78,617.28 and 35,724.48

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Solution

The fourth proportional to 56,960.64, 78,617.28 and 35,724.48 is: 49,307.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,960.64 : 78,617.28 = 35,724.48 : x
  2. Step 2: Convert to fraction form
    56,960.64/78,617.28 = 35,724.48/x
  3. Step 3: Cross multiply
    56,960.64x = 78,617.28 × 35,724.48
  4. Step 4: Simplify right side
    56,960.64x = 2,808,561,447.01
  5. Step 5: Solve for x
    x = 2,808,561,447.01/56,960.64
  6. Step 6: Final answer
    x = 49,307.06

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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.