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Finding the Fourth Proportional to 65,763.39, 90,731.70 and 37,079.46

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Solution

The fourth proportional to 65,763.39, 90,731.70 and 37,079.46 is: 51,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,763.39 : 90,731.70 = 37,079.46 : x
  2. Step 2: Convert to fraction form
    65,763.39/90,731.70 = 37,079.46/x
  3. Step 3: Cross multiply
    65,763.39x = 90,731.70 × 37,079.46
  4. Step 4: Simplify right side
    65,763.39x = 3,364,282,440.88
  5. Step 5: Solve for x
    x = 3,364,282,440.88/65,763.39
  6. Step 6: Final answer
    x = 51,157.38

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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.