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Finding the Fourth Proportional to 67,209.05, 100,802.50 and 25,078.12

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Solution

The fourth proportional to 67,209.05, 100,802.50 and 25,078.12 is: 37,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,209.05 : 100,802.50 = 25,078.12 : x
  2. Step 2: Convert to fraction form
    67,209.05/100,802.50 = 25,078.12/x
  3. Step 3: Cross multiply
    67,209.05x = 100,802.50 × 25,078.12
  4. Step 4: Simplify right side
    67,209.05x = 2,527,937,191.30
  5. Step 5: Solve for x
    x = 2,527,937,191.30/67,209.05
  6. Step 6: Final answer
    x = 37,613.05

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1.5x scale

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.