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Finding the Fourth Proportional to 105,549.54, 145,658.28 and 57,803.82

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Solution

The fourth proportional to 105,549.54, 145,658.28 and 57,803.82 is: 79,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,549.54 : 145,658.28 = 57,803.82 : x
  2. Step 2: Convert to fraction form
    105,549.54/145,658.28 = 57,803.82/x
  3. Step 3: Cross multiply
    105,549.54x = 145,658.28 × 57,803.82
  4. Step 4: Simplify right side
    105,549.54x = 8,419,604,998.63
  5. Step 5: Solve for x
    x = 8,419,604,998.63/105,549.54
  6. Step 6: Final answer
    x = 79,769.22

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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.