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Finding the Fourth Proportional to 56,772.59, 77,778.79 and 54,644.31

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Solution

The fourth proportional to 56,772.59, 77,778.79 and 54,644.31 is: 74,863.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,772.59 : 77,778.79 = 54,644.31 : x
  2. Step 2: Convert to fraction form
    56,772.59/77,778.79 = 54,644.31/x
  3. Step 3: Cross multiply
    56,772.59x = 77,778.79 × 54,644.31
  4. Step 4: Simplify right side
    56,772.59x = 4,250,168,175.57
  5. Step 5: Solve for x
    x = 4,250,168,175.57/56,772.59
  6. Step 6: Final answer
    x = 74,863.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.