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Finding the Fourth Proportional to 58,431.89, 87,656.29 and 18,437.29

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Solution

The fourth proportional to 58,431.89, 87,656.29 and 18,437.29 is: 27,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,431.89 : 87,656.29 = 18,437.29 : x
  2. Step 2: Convert to fraction form
    58,431.89/87,656.29 = 18,437.29/x
  3. Step 3: Cross multiply
    58,431.89x = 87,656.29 × 18,437.29
  4. Step 4: Simplify right side
    58,431.89x = 1,616,144,173.82
  5. Step 5: Solve for x
    x = 1,616,144,173.82/58,431.89
  6. Step 6: Final answer
    x = 27,658.60

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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.