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Finding the Fourth Proportional to 207,339.20, 310,930.72 and 67,060.16

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Solution

The fourth proportional to 207,339.20, 310,930.72 and 67,060.16 is: 100,564.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,339.20 : 310,930.72 = 67,060.16 : x
  2. Step 2: Convert to fraction form
    207,339.20/310,930.72 = 67,060.16/x
  3. Step 3: Cross multiply
    207,339.20x = 310,930.72 × 67,060.16
  4. Step 4: Simplify right side
    207,339.20x = 20,851,063,832.12
  5. Step 5: Solve for x
    x = 20,851,063,832.12/207,339.20
  6. Step 6: Final answer
    x = 100,564.99

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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.