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Finding the Fourth Proportional to 8,531.79, 11,774.79 and 4,997.97

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Solution

The fourth proportional to 8,531.79, 11,774.79 and 4,997.97 is: 6,897.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.79 : 11,774.79 = 4,997.97 : x
  2. Step 2: Convert to fraction form
    8,531.79/11,774.79 = 4,997.97/x
  3. Step 3: Cross multiply
    8,531.79x = 11,774.79 × 4,997.97
  4. Step 4: Simplify right side
    8,531.79x = 58,850,047.18
  5. Step 5: Solve for x
    x = 58,850,047.18/8,531.79
  6. Step 6: Final answer
    x = 6,897.74

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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.