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Finding the Fourth Proportional to 57,111.40, 78,863.78 and 35,927.40

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Solution

The fourth proportional to 57,111.40, 78,863.78 and 35,927.40 is: 49,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,111.40 : 78,863.78 = 35,927.40 : x
  2. Step 2: Convert to fraction form
    57,111.40/78,863.78 = 35,927.40/x
  3. Step 3: Cross multiply
    57,111.40x = 78,863.78 × 35,927.40
  4. Step 4: Simplify right side
    57,111.40x = 2,833,370,569.57
  5. Step 5: Solve for x
    x = 2,833,370,569.57/57,111.40
  6. Step 6: Final answer
    x = 49,611.30

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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.