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Finding the Fourth Proportional to 100,619.22, 138,792.78 and 59,755.58

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Solution

The fourth proportional to 100,619.22, 138,792.78 and 59,755.58 is: 82,426.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,619.22 : 138,792.78 = 59,755.58 : x
  2. Step 2: Convert to fraction form
    100,619.22/138,792.78 = 59,755.58/x
  3. Step 3: Cross multiply
    100,619.22x = 138,792.78 × 59,755.58
  4. Step 4: Simplify right side
    100,619.22x = 8,293,642,374.75
  5. Step 5: Solve for x
    x = 8,293,642,374.75/100,619.22
  6. Step 6: Final answer
    x = 82,426.03

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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.