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Finding the Fourth Proportional to 65,604.99, 90,531.90 and 40,153.71

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Solution

The fourth proportional to 65,604.99, 90,531.90 and 40,153.71 is: 55,410.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,604.99 : 90,531.90 = 40,153.71 : x
  2. Step 2: Convert to fraction form
    65,604.99/90,531.90 = 40,153.71/x
  3. Step 3: Cross multiply
    65,604.99x = 90,531.90 × 40,153.71
  4. Step 4: Simplify right side
    65,604.99x = 3,635,191,658.35
  5. Step 5: Solve for x
    x = 3,635,191,658.35/65,604.99
  6. Step 6: Final answer
    x = 55,410.29

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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.