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Finding the Fourth Proportional to 57,017.52, 78,684.48 and 31,866.48

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Solution

The fourth proportional to 57,017.52, 78,684.48 and 31,866.48 is: 43,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,017.52 : 78,684.48 = 31,866.48 : x
  2. Step 2: Convert to fraction form
    57,017.52/78,684.48 = 31,866.48/x
  3. Step 3: Cross multiply
    57,017.52x = 78,684.48 × 31,866.48
  4. Step 4: Simplify right side
    57,017.52x = 2,507,397,408.23
  5. Step 5: Solve for x
    x = 2,507,397,408.23/57,017.52
  6. Step 6: Final answer
    x = 43,975.91

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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.