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Finding the Fourth Proportional to 144,879.52, 217,193.64 and 56,071.90

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Solution

The fourth proportional to 144,879.52, 217,193.64 and 56,071.90 is: 84,059.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,879.52 : 217,193.64 = 56,071.90 : x
  2. Step 2: Convert to fraction form
    144,879.52/217,193.64 = 56,071.90/x
  3. Step 3: Cross multiply
    144,879.52x = 217,193.64 × 56,071.90
  4. Step 4: Simplify right side
    144,879.52x = 12,178,460,062.72
  5. Step 5: Solve for x
    x = 12,178,460,062.72/144,879.52
  6. Step 6: Final answer
    x = 84,059.22

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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.