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Finding the Fourth Proportional to 58,679.36, 87,983.88 and 18,681.06

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Solution

The fourth proportional to 58,679.36, 87,983.88 and 18,681.06 is: 28,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,679.36 : 87,983.88 = 18,681.06 : x
  2. Step 2: Convert to fraction form
    58,679.36/87,983.88 = 18,681.06/x
  3. Step 3: Cross multiply
    58,679.36x = 87,983.88 × 18,681.06
  4. Step 4: Simplify right side
    58,679.36x = 1,643,632,141.31
  5. Step 5: Solve for x
    x = 1,643,632,141.31/58,679.36
  6. Step 6: Final answer
    x = 28,010.40

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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.