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Finding the Fourth Proportional to 170,062.20, 255,085.20 and 57,731.40

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Solution

The fourth proportional to 170,062.20, 255,085.20 and 57,731.40 is: 86,594.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,062.20 : 255,085.20 = 57,731.40 : x
  2. Step 2: Convert to fraction form
    170,062.20/255,085.20 = 57,731.40/x
  3. Step 3: Cross multiply
    170,062.20x = 255,085.20 × 57,731.40
  4. Step 4: Simplify right side
    170,062.20x = 14,726,425,715.28
  5. Step 5: Solve for x
    x = 14,726,425,715.28/170,062.20
  6. Step 6: Final answer
    x = 86,594.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.