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Finding the Fourth Proportional to 58,061.66, 87,107.49 and 18,619.11

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Solution

The fourth proportional to 58,061.66, 87,107.49 and 18,619.11 is: 27,933.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,061.66 : 87,107.49 = 18,619.11 : x
  2. Step 2: Convert to fraction form
    58,061.66/87,107.49 = 18,619.11/x
  3. Step 3: Cross multiply
    58,061.66x = 87,107.49 × 18,619.11
  4. Step 4: Simplify right side
    58,061.66x = 1,621,863,938.13
  5. Step 5: Solve for x
    x = 1,621,863,938.13/58,061.66
  6. Step 6: Final answer
    x = 27,933.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.