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Finding the Fourth Proportional to 104,390.64, 144,060.12 and 56,644.38

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Solution

The fourth proportional to 104,390.64, 144,060.12 and 56,644.38 is: 78,169.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,390.64 : 144,060.12 = 56,644.38 : x
  2. Step 2: Convert to fraction form
    104,390.64/144,060.12 = 56,644.38/x
  3. Step 3: Cross multiply
    104,390.64x = 144,060.12 × 56,644.38
  4. Step 4: Simplify right side
    104,390.64x = 8,160,196,180.13
  5. Step 5: Solve for x
    x = 8,160,196,180.13/104,390.64
  6. Step 6: Final answer
    x = 78,169.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.