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Finding the Fourth Proportional to 65,873.25, 90,905.09 and 37,578.33

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Solution

The fourth proportional to 65,873.25, 90,905.09 and 37,578.33 is: 51,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,873.25 : 90,905.09 = 37,578.33 : x
  2. Step 2: Convert to fraction form
    65,873.25/90,905.09 = 37,578.33/x
  3. Step 3: Cross multiply
    65,873.25x = 90,905.09 × 37,578.33
  4. Step 4: Simplify right side
    65,873.25x = 3,416,061,282.81
  5. Step 5: Solve for x
    x = 3,416,061,282.81/65,873.25
  6. Step 6: Final answer
    x = 51,858.10

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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.