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Finding the Fourth Proportional to 188,698.80, 260,406.28 and 108,124.58

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Solution

The fourth proportional to 188,698.80, 260,406.28 and 108,124.58 is: 149,213.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,698.80 : 260,406.28 = 108,124.58 : x
  2. Step 2: Convert to fraction form
    188,698.80/260,406.28 = 108,124.58/x
  3. Step 3: Cross multiply
    188,698.80x = 260,406.28 × 108,124.58
  4. Step 4: Simplify right side
    188,698.80x = 28,156,319,654.36
  5. Step 5: Solve for x
    x = 28,156,319,654.36/188,698.80
  6. Step 6: Final answer
    x = 149,213.03

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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.