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Finding the Fourth Proportional to 104,404.56, 144,078.29 and 56,657.91

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Solution

The fourth proportional to 104,404.56, 144,078.29 and 56,657.91 is: 78,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,404.56 : 144,078.29 = 56,657.91 : x
  2. Step 2: Convert to fraction form
    104,404.56/144,078.29 = 56,657.91/x
  3. Step 3: Cross multiply
    104,404.56x = 144,078.29 × 56,657.91
  4. Step 4: Simplify right side
    104,404.56x = 8,163,174,729.09
  5. Step 5: Solve for x
    x = 8,163,174,729.09/104,404.56
  6. Step 6: Final answer
    x = 78,187.91

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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.