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Finding the Fourth Proportional to 105,473.39, 145,553.58 and 57,729.83

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Solution

The fourth proportional to 105,473.39, 145,553.58 and 57,729.83 is: 79,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,473.39 : 145,553.58 = 57,729.83 : x
  2. Step 2: Convert to fraction form
    105,473.39/145,553.58 = 57,729.83/x
  3. Step 3: Cross multiply
    105,473.39x = 145,553.58 × 57,729.83
  4. Step 4: Simplify right side
    105,473.39x = 8,402,782,701.52
  5. Step 5: Solve for x
    x = 8,402,782,701.52/105,473.39
  6. Step 6: Final answer
    x = 79,667.33

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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.