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Finding the Fourth Proportional to 57,643.40, 79,534.36 and 34,981.86

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Solution

The fourth proportional to 57,643.40, 79,534.36 and 34,981.86 is: 48,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,643.40 : 79,534.36 = 34,981.86 : x
  2. Step 2: Convert to fraction form
    57,643.40/79,534.36 = 34,981.86/x
  3. Step 3: Cross multiply
    57,643.40x = 79,534.36 × 34,981.86
  4. Step 4: Simplify right side
    57,643.40x = 2,782,259,880.07
  5. Step 5: Solve for x
    x = 2,782,259,880.07/57,643.40
  6. Step 6: Final answer
    x = 48,266.76

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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.