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Finding the Fourth Proportional to 188,659.74, 260,326.77 and 127,538.88

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Solution

The fourth proportional to 188,659.74, 260,326.77 and 127,538.88 is: 175,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,659.74 : 260,326.77 = 127,538.88 : x
  2. Step 2: Convert to fraction form
    188,659.74/260,326.77 = 127,538.88/x
  3. Step 3: Cross multiply
    188,659.74x = 260,326.77 × 127,538.88
  4. Step 4: Simplify right side
    188,659.74x = 33,201,784,679.82
  5. Step 5: Solve for x
    x = 33,201,784,679.82/188,659.74
  6. Step 6: Final answer
    x = 175,987.65

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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.