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Finding the Fourth Proportional to 65,085.66, 89,818.86 and 38,236.80

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Solution

The fourth proportional to 65,085.66, 89,818.86 and 38,236.80 is: 52,767.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,085.66 : 89,818.86 = 38,236.80 : x
  2. Step 2: Convert to fraction form
    65,085.66/89,818.86 = 38,236.80/x
  3. Step 3: Cross multiply
    65,085.66x = 89,818.86 × 38,236.80
  4. Step 4: Simplify right side
    65,085.66x = 3,434,385,786.05
  5. Step 5: Solve for x
    x = 3,434,385,786.05/65,085.66
  6. Step 6: Final answer
    x = 52,767.17

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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.