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Finding the Fourth Proportional to 58,620.56, 87,941.64 and 19,179.88

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Solution

The fourth proportional to 58,620.56, 87,941.64 and 19,179.88 is: 28,773.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,620.56 : 87,941.64 = 19,179.88 : x
  2. Step 2: Convert to fraction form
    58,620.56/87,941.64 = 19,179.88/x
  3. Step 3: Cross multiply
    58,620.56x = 87,941.64 × 19,179.88
  4. Step 4: Simplify right side
    58,620.56x = 1,686,710,102.20
  5. Step 5: Solve for x
    x = 1,686,710,102.20/58,620.56
  6. Step 6: Final answer
    x = 28,773.35

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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.