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Finding the Fourth Proportional to 144,237.78, 199,047.87 and 86,910.30

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Solution

The fourth proportional to 144,237.78, 199,047.87 and 86,910.30 is: 119,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,237.78 : 199,047.87 = 86,910.30 : x
  2. Step 2: Convert to fraction form
    144,237.78/199,047.87 = 86,910.30/x
  3. Step 3: Cross multiply
    144,237.78x = 199,047.87 × 86,910.30
  4. Step 4: Simplify right side
    144,237.78x = 17,299,310,096.06
  5. Step 5: Solve for x
    x = 17,299,310,096.06/144,237.78
  6. Step 6: Final answer
    x = 119,936.05

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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.