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Finding the Fourth Proportional to 151,447.96, 208,998.99 and 86,912.06

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Solution

The fourth proportional to 151,447.96, 208,998.99 and 86,912.06 is: 119,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,447.96 : 208,998.99 = 86,912.06 : x
  2. Step 2: Convert to fraction form
    151,447.96/208,998.99 = 86,912.06/x
  3. Step 3: Cross multiply
    151,447.96x = 208,998.99 × 86,912.06
  4. Step 4: Simplify right side
    151,447.96x = 18,164,532,758.82
  5. Step 5: Solve for x
    x = 18,164,532,758.82/151,447.96
  6. Step 6: Final answer
    x = 119,939.10

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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.