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Finding the Fourth Proportional to 56,963.93, 78,608.21 and 31,469.85

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Solution

The fourth proportional to 56,963.93, 78,608.21 and 31,469.85 is: 43,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,963.93 : 78,608.21 = 31,469.85 : x
  2. Step 2: Convert to fraction form
    56,963.93/78,608.21 = 31,469.85/x
  3. Step 3: Cross multiply
    56,963.93x = 78,608.21 × 31,469.85
  4. Step 4: Simplify right side
    56,963.93x = 2,473,788,420.12
  5. Step 5: Solve for x
    x = 2,473,788,420.12/56,963.93
  6. Step 6: Final answer
    x = 43,427.28

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1.5x scale

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.