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Finding the Fourth Proportional to 139,636.06, 209,422.54 and 39,794.11

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Solution

The fourth proportional to 139,636.06, 209,422.54 and 39,794.11 is: 59,682.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,636.06 : 209,422.54 = 39,794.11 : x
  2. Step 2: Convert to fraction form
    139,636.06/209,422.54 = 39,794.11/x
  3. Step 3: Cross multiply
    139,636.06x = 209,422.54 × 39,794.11
  4. Step 4: Simplify right side
    139,636.06x = 8,333,783,593.24
  5. Step 5: Solve for x
    x = 8,333,783,593.24/139,636.06
  6. Step 6: Final answer
    x = 59,682.17

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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.