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Finding the Fourth Proportional to 58,172.86, 87,259.28 and 16,619.86

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Solution

The fourth proportional to 58,172.86, 87,259.28 and 16,619.86 is: 24,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,172.86 : 87,259.28 = 16,619.86 : x
  2. Step 2: Convert to fraction form
    58,172.86/87,259.28 = 16,619.86/x
  3. Step 3: Cross multiply
    58,172.86x = 87,259.28 × 16,619.86
  4. Step 4: Simplify right side
    58,172.86x = 1,450,237,017.30
  5. Step 5: Solve for x
    x = 1,450,237,017.30/58,172.86
  6. Step 6: Final answer
    x = 24,929.79

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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.