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Finding the Fourth Proportional to 261,126.96, 391,865.58 and 167,698.32

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Solution

The fourth proportional to 261,126.96, 391,865.58 and 167,698.32 is: 251,659.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,126.96 : 391,865.58 = 167,698.32 : x
  2. Step 2: Convert to fraction form
    261,126.96/391,865.58 = 167,698.32/x
  3. Step 3: Cross multiply
    261,126.96x = 391,865.58 × 167,698.32
  4. Step 4: Simplify right side
    261,126.96x = 65,715,199,431.83
  5. Step 5: Solve for x
    x = 65,715,199,431.83/261,126.96
  6. Step 6: Final answer
    x = 251,659.96

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1.5x scale

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.