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Finding the Fourth Proportional to 65,649.16, 90,574.50 and 38,792.44

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Solution

The fourth proportional to 65,649.16, 90,574.50 and 38,792.44 is: 53,520.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,649.16 : 90,574.50 = 38,792.44 : x
  2. Step 2: Convert to fraction form
    65,649.16/90,574.50 = 38,792.44/x
  3. Step 3: Cross multiply
    65,649.16x = 90,574.50 × 38,792.44
  4. Step 4: Simplify right side
    65,649.16x = 3,513,605,856.78
  5. Step 5: Solve for x
    x = 3,513,605,856.78/65,649.16
  6. Step 6: Final answer
    x = 53,520.96

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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.