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Finding the Fourth Proportional to 189,987.52, 285,059.75 and 83,316.26

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Solution

The fourth proportional to 189,987.52, 285,059.75 and 83,316.26 is: 125,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,987.52 : 285,059.75 = 83,316.26 : x
  2. Step 2: Convert to fraction form
    189,987.52/285,059.75 = 83,316.26/x
  3. Step 3: Cross multiply
    189,987.52x = 285,059.75 × 83,316.26
  4. Step 4: Simplify right side
    189,987.52x = 23,750,110,404.66
  5. Step 5: Solve for x
    x = 23,750,110,404.66/189,987.52
  6. Step 6: Final answer
    x = 125,008.79

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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.