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Finding the Fourth Proportional to 70,913.70, 97,861.50 and 39,082.68

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Solution

The fourth proportional to 70,913.70, 97,861.50 and 39,082.68 is: 53,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,913.70 : 97,861.50 = 39,082.68 : x
  2. Step 2: Convert to fraction form
    70,913.70/97,861.50 = 39,082.68/x
  3. Step 3: Cross multiply
    70,913.70x = 97,861.50 × 39,082.68
  4. Step 4: Simplify right side
    70,913.70x = 3,824,689,688.82
  5. Step 5: Solve for x
    x = 3,824,689,688.82/70,913.70
  6. Step 6: Final answer
    x = 53,934.43

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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.