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Finding the Fourth Proportional to 83,759.76, 115,588.05 and 45,519.05

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Solution

The fourth proportional to 83,759.76, 115,588.05 and 45,519.05 is: 62,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,759.76 : 115,588.05 = 45,519.05 : x
  2. Step 2: Convert to fraction form
    83,759.76/115,588.05 = 45,519.05/x
  3. Step 3: Cross multiply
    83,759.76x = 115,588.05 × 45,519.05
  4. Step 4: Simplify right side
    83,759.76x = 5,261,457,649.41
  5. Step 5: Solve for x
    x = 5,261,457,649.41/83,759.76
  6. Step 6: Final answer
    x = 62,816.05

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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.