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Finding the Fourth Proportional to 144,866.20, 217,169.70 and 56,090.20

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Solution

The fourth proportional to 144,866.20, 217,169.70 and 56,090.20 is: 84,085.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,866.20 : 217,169.70 = 56,090.20 : x
  2. Step 2: Convert to fraction form
    144,866.20/217,169.70 = 56,090.20/x
  3. Step 3: Cross multiply
    144,866.20x = 217,169.70 × 56,090.20
  4. Step 4: Simplify right side
    144,866.20x = 12,181,091,906.94
  5. Step 5: Solve for x
    x = 12,181,091,906.94/144,866.20
  6. Step 6: Final answer
    x = 84,085.12

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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.