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Finding the Fourth Proportional to 83,875.88, 115,755.38 and 48,069.21

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Solution

The fourth proportional to 83,875.88, 115,755.38 and 48,069.21 is: 66,339.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,875.88 : 115,755.38 = 48,069.21 : x
  2. Step 2: Convert to fraction form
    83,875.88/115,755.38 = 48,069.21/x
  3. Step 3: Cross multiply
    83,875.88x = 115,755.38 × 48,069.21
  4. Step 4: Simplify right side
    83,875.88x = 5,564,269,429.50
  5. Step 5: Solve for x
    x = 5,564,269,429.50/83,875.88
  6. Step 6: Final answer
    x = 66,339.33

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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.