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Finding the Fourth Proportional to 58,386.89, 87,580.30 and 18,944.01

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Solution

The fourth proportional to 58,386.89, 87,580.30 and 18,944.01 is: 28,415.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,386.89 : 87,580.30 = 18,944.01 : x
  2. Step 2: Convert to fraction form
    58,386.89/87,580.30 = 18,944.01/x
  3. Step 3: Cross multiply
    58,386.89x = 87,580.30 × 18,944.01
  4. Step 4: Simplify right side
    58,386.89x = 1,659,121,546.38
  5. Step 5: Solve for x
    x = 1,659,121,546.38/58,386.89
  6. Step 6: Final answer
    x = 28,415.99

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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.