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Finding the Fourth Proportional to 70,911.99, 97,859.21 and 39,082.05

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Solution

The fourth proportional to 70,911.99, 97,859.21 and 39,082.05 is: 53,933.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.99 : 97,859.21 = 39,082.05 : x
  2. Step 2: Convert to fraction form
    70,911.99/97,859.21 = 39,082.05/x
  3. Step 3: Cross multiply
    70,911.99x = 97,859.21 × 39,082.05
  4. Step 4: Simplify right side
    70,911.99x = 3,824,538,342.77
  5. Step 5: Solve for x
    x = 3,824,538,342.77/70,911.99
  6. Step 6: Final answer
    x = 53,933.59

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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.