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Finding the Fourth Proportional to 144,953.70, 217,430.55 and 109,961.70

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Solution

The fourth proportional to 144,953.70, 217,430.55 and 109,961.70 is: 164,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,953.70 : 217,430.55 = 109,961.70 : x
  2. Step 2: Convert to fraction form
    144,953.70/217,430.55 = 109,961.70/x
  3. Step 3: Cross multiply
    144,953.70x = 217,430.55 × 109,961.70
  4. Step 4: Simplify right side
    144,953.70x = 23,909,032,909.94
  5. Step 5: Solve for x
    x = 23,909,032,909.94/144,953.70
  6. Step 6: Final answer
    x = 164,942.55

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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.