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Finding the Fourth Proportional to 65,755.51, 90,740.78 and 37,074.92

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Solution

The fourth proportional to 65,755.51, 90,740.78 and 37,074.92 is: 51,162.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,755.51 : 90,740.78 = 37,074.92 : x
  2. Step 2: Convert to fraction form
    65,755.51/90,740.78 = 37,074.92/x
  3. Step 3: Cross multiply
    65,755.51x = 90,740.78 × 37,074.92
  4. Step 4: Simplify right side
    65,755.51x = 3,364,206,520.16
  5. Step 5: Solve for x
    x = 3,364,206,520.16/65,755.51
  6. Step 6: Final answer
    x = 51,162.36

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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.