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Finding the Fourth Proportional to 65,064.09, 89,753.79 and 39,578.25

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Solution

The fourth proportional to 65,064.09, 89,753.79 and 39,578.25 is: 54,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,064.09 : 89,753.79 = 39,578.25 : x
  2. Step 2: Convert to fraction form
    65,064.09/89,753.79 = 39,578.25/x
  3. Step 3: Cross multiply
    65,064.09x = 89,753.79 × 39,578.25
  4. Step 4: Simplify right side
    65,064.09x = 3,552,297,939.07
  5. Step 5: Solve for x
    x = 3,552,297,939.07/65,064.09
  6. Step 6: Final answer
    x = 54,596.90

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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.