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Finding the Fourth Proportional to 57,117.66, 78,858.10 and 36,708

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Solution

The fourth proportional to 57,117.66, 78,858.10 and 36,708 is: 50,680.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,117.66 : 78,858.10 = 36,708 : x
  2. Step 2: Convert to fraction form
    57,117.66/78,858.10 = 36,708/x
  3. Step 3: Cross multiply
    57,117.66x = 78,858.10 × 36,708
  4. Step 4: Simplify right side
    57,117.66x = 2,894,723,134.80
  5. Step 5: Solve for x
    x = 2,894,723,134.80/57,117.66
  6. Step 6: Final answer
    x = 50,680.00

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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.