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Finding the Fourth Proportional to 57,513.12, 78,944.04 and 51,084.96

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Solution

The fourth proportional to 57,513.12, 78,944.04 and 51,084.96 is: 70,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,513.12 : 78,944.04 = 51,084.96 : x
  2. Step 2: Convert to fraction form
    57,513.12/78,944.04 = 51,084.96/x
  3. Step 3: Cross multiply
    57,513.12x = 78,944.04 × 51,084.96
  4. Step 4: Simplify right side
    57,513.12x = 4,032,853,125.64
  5. Step 5: Solve for x
    x = 4,032,853,125.64/57,513.12
  6. Step 6: Final answer
    x = 70,120.58

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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.