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Finding the Fourth Proportional to 104,397.60, 144,003 and 61,926

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Solution

The fourth proportional to 104,397.60, 144,003 and 61,926 is: 85,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,397.60 : 144,003 = 61,926 : x
  2. Step 2: Convert to fraction form
    104,397.60/144,003 = 61,926/x
  3. Step 3: Cross multiply
    104,397.60x = 144,003 × 61,926
  4. Step 4: Simplify right side
    104,397.60x = 8,917,529,778
  5. Step 5: Solve for x
    x = 8,917,529,778/104,397.60
  6. Step 6: Final answer
    x = 85,418.92

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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.