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Finding the Fourth Proportional to 149,818.52, 206,749.54 and 86,154.92

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Solution

The fourth proportional to 149,818.52, 206,749.54 and 86,154.92 is: 118,893.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,818.52 : 206,749.54 = 86,154.92 : x
  2. Step 2: Convert to fraction form
    149,818.52/206,749.54 = 86,154.92/x
  3. Step 3: Cross multiply
    149,818.52x = 206,749.54 × 86,154.92
  4. Step 4: Simplify right side
    149,818.52x = 17,812,490,078.74
  5. Step 5: Solve for x
    x = 17,812,490,078.74/149,818.52
  6. Step 6: Final answer
    x = 118,893.78

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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.