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Finding the Fourth Proportional to 144,048.92, 215,925.75 and 55,278.59

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Solution

The fourth proportional to 144,048.92, 215,925.75 and 55,278.59 is: 82,861.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,048.92 : 215,925.75 = 55,278.59 : x
  2. Step 2: Convert to fraction form
    144,048.92/215,925.75 = 55,278.59/x
  3. Step 3: Cross multiply
    144,048.92x = 215,925.75 × 55,278.59
  4. Step 4: Simplify right side
    144,048.92x = 11,936,069,925.06
  5. Step 5: Solve for x
    x = 11,936,069,925.06/144,048.92
  6. Step 6: Final answer
    x = 82,861.23

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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.