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Finding the Fourth Proportional to 60,713.20, 91,069.80 and 52,937.20

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Solution

The fourth proportional to 60,713.20, 91,069.80 and 52,937.20 is: 79,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,713.20 : 91,069.80 = 52,937.20 : x
  2. Step 2: Convert to fraction form
    60,713.20/91,069.80 = 52,937.20/x
  3. Step 3: Cross multiply
    60,713.20x = 91,069.80 × 52,937.20
  4. Step 4: Simplify right side
    60,713.20x = 4,820,980,216.56
  5. Step 5: Solve for x
    x = 4,820,980,216.56/60,713.20
  6. Step 6: Final answer
    x = 79,405.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.