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Finding the Fourth Proportional to 170,081.66, 255,038.65 and 57,720.89

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Solution

The fourth proportional to 170,081.66, 255,038.65 and 57,720.89 is: 86,552.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,081.66 : 255,038.65 = 57,720.89 : x
  2. Step 2: Convert to fraction form
    170,081.66/255,038.65 = 57,720.89/x
  3. Step 3: Cross multiply
    170,081.66x = 255,038.65 × 57,720.89
  4. Step 4: Simplify right side
    170,081.66x = 14,721,056,442.90
  5. Step 5: Solve for x
    x = 14,721,056,442.90/170,081.66
  6. Step 6: Final answer
    x = 86,552.88

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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.