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Finding the Fourth Proportional to 70,592.87, 97,418.48 and 40,378.52

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Solution

The fourth proportional to 70,592.87, 97,418.48 and 40,378.52 is: 55,722.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,592.87 : 97,418.48 = 40,378.52 : x
  2. Step 2: Convert to fraction form
    70,592.87/97,418.48 = 40,378.52/x
  3. Step 3: Cross multiply
    70,592.87x = 97,418.48 × 40,378.52
  4. Step 4: Simplify right side
    70,592.87x = 3,933,613,354.06
  5. Step 5: Solve for x
    x = 3,933,613,354.06/70,592.87
  6. Step 6: Final answer
    x = 55,722.53

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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.