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Finding the Fourth Proportional to 104,357.62, 144,012.90 and 56,609.92

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Solution

The fourth proportional to 104,357.62, 144,012.90 and 56,609.92 is: 78,121.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,357.62 : 144,012.90 = 56,609.92 : x
  2. Step 2: Convert to fraction form
    104,357.62/144,012.90 = 56,609.92/x
  3. Step 3: Cross multiply
    104,357.62x = 144,012.90 × 56,609.92
  4. Step 4: Simplify right side
    104,357.62x = 8,152,558,747.97
  5. Step 5: Solve for x
    x = 8,152,558,747.97/104,357.62
  6. Step 6: Final answer
    x = 78,121.36

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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.