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Finding the Fourth Proportional to 188,622.80, 260,212.20 and 113,040.08

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Solution

The fourth proportional to 188,622.80, 260,212.20 and 113,040.08 is: 155,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,622.80 : 260,212.20 = 113,040.08 : x
  2. Step 2: Convert to fraction form
    188,622.80/260,212.20 = 113,040.08/x
  3. Step 3: Cross multiply
    188,622.80x = 260,212.20 × 113,040.08
  4. Step 4: Simplify right side
    188,622.80x = 29,414,407,904.98
  5. Step 5: Solve for x
    x = 29,414,407,904.98/188,622.80
  6. Step 6: Final answer
    x = 155,943.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.