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Finding the Fourth Proportional to 65,186.99, 89,958.09 and 35,378.99

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Solution

The fourth proportional to 65,186.99, 89,958.09 and 35,378.99 is: 48,823.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,186.99 : 89,958.09 = 35,378.99 : x
  2. Step 2: Convert to fraction form
    65,186.99/89,958.09 = 35,378.99/x
  3. Step 3: Cross multiply
    65,186.99x = 89,958.09 × 35,378.99
  4. Step 4: Simplify right side
    65,186.99x = 3,182,626,502.98
  5. Step 5: Solve for x
    x = 3,182,626,502.98/65,186.99
  6. Step 6: Final answer
    x = 48,823.03

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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.