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Finding the Fourth Proportional to 67,740.75, 101,674.19 and 34,485.72

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Solution

The fourth proportional to 67,740.75, 101,674.19 and 34,485.72 is: 51,760.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,740.75 : 101,674.19 = 34,485.72 : x
  2. Step 2: Convert to fraction form
    67,740.75/101,674.19 = 34,485.72/x
  3. Step 3: Cross multiply
    67,740.75x = 101,674.19 × 34,485.72
  4. Step 4: Simplify right side
    67,740.75x = 3,506,307,475.14
  5. Step 5: Solve for x
    x = 3,506,307,475.14/67,740.75
  6. Step 6: Final answer
    x = 51,760.68

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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.