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Finding the Fourth Proportional to 149,656.44, 206,530.72 and 85,124.02

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Solution

The fourth proportional to 149,656.44, 206,530.72 and 85,124.02 is: 117,473.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,656.44 : 206,530.72 = 85,124.02 : x
  2. Step 2: Convert to fraction form
    149,656.44/206,530.72 = 85,124.02/x
  3. Step 3: Cross multiply
    149,656.44x = 206,530.72 × 85,124.02
  4. Step 4: Simplify right side
    149,656.44x = 17,580,724,456.55
  5. Step 5: Solve for x
    x = 17,580,724,456.55/149,656.44
  6. Step 6: Final answer
    x = 117,473.89

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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.