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Finding the Fourth Proportional to 283,586.88, 391,111.56 and 170,387.76

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Solution

The fourth proportional to 283,586.88, 391,111.56 and 170,387.76 is: 234,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,586.88 : 391,111.56 = 170,387.76 : x
  2. Step 2: Convert to fraction form
    283,586.88/391,111.56 = 170,387.76/x
  3. Step 3: Cross multiply
    283,586.88x = 391,111.56 × 170,387.76
  4. Step 4: Simplify right side
    283,586.88x = 66,640,622,618.51
  5. Step 5: Solve for x
    x = 66,640,622,618.51/283,586.88
  6. Step 6: Final answer
    x = 234,991.91

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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.