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Finding the Fourth Proportional to 172,779.38, 259,285.84 and 60,460.58

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Solution

The fourth proportional to 172,779.38, 259,285.84 and 60,460.58 is: 90,731.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,779.38 : 259,285.84 = 60,460.58 : x
  2. Step 2: Convert to fraction form
    172,779.38/259,285.84 = 60,460.58/x
  3. Step 3: Cross multiply
    172,779.38x = 259,285.84 × 60,460.58
  4. Step 4: Simplify right side
    172,779.38x = 15,676,573,164.12
  5. Step 5: Solve for x
    x = 15,676,573,164.12/172,779.38
  6. Step 6: Final answer
    x = 90,731.74

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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.