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Finding the Fourth Proportional to 65,717.46, 90,690.03 and 35,909.46

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Solution

The fourth proportional to 65,717.46, 90,690.03 and 35,909.46 is: 49,555.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,717.46 : 90,690.03 = 35,909.46 : x
  2. Step 2: Convert to fraction form
    65,717.46/90,690.03 = 35,909.46/x
  3. Step 3: Cross multiply
    65,717.46x = 90,690.03 × 35,909.46
  4. Step 4: Simplify right side
    65,717.46x = 3,256,630,004.68
  5. Step 5: Solve for x
    x = 3,256,630,004.68/65,717.46
  6. Step 6: Final answer
    x = 49,555.02

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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.