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Finding the Fourth Proportional to 70,617.80, 106,311.47 and 60,975.56

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Solution

The fourth proportional to 70,617.80, 106,311.47 and 60,975.56 is: 91,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,617.80 : 106,311.47 = 60,975.56 : x
  2. Step 2: Convert to fraction form
    70,617.80/106,311.47 = 60,975.56/x
  3. Step 3: Cross multiply
    70,617.80x = 106,311.47 × 60,975.56
  4. Step 4: Simplify right side
    70,617.80x = 6,482,401,417.67
  5. Step 5: Solve for x
    x = 6,482,401,417.67/70,617.80
  6. Step 6: Final answer
    x = 91,795.57

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.