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Finding the Fourth Proportional to 86,386.32, 129,579.48 and 33,759

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Solution

The fourth proportional to 86,386.32, 129,579.48 and 33,759 is: 50,638.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,386.32 : 129,579.48 = 33,759 : x
  2. Step 2: Convert to fraction form
    86,386.32/129,579.48 = 33,759/x
  3. Step 3: Cross multiply
    86,386.32x = 129,579.48 × 33,759
  4. Step 4: Simplify right side
    86,386.32x = 4,374,473,665.32
  5. Step 5: Solve for x
    x = 4,374,473,665.32/86,386.32
  6. Step 6: Final answer
    x = 50,638.50

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Similar ratio
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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.