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Finding the Fourth Proportional to 58,270.78, 87,406.68 and 18,827.90

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Solution

The fourth proportional to 58,270.78, 87,406.68 and 18,827.90 is: 28,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,270.78 : 87,406.68 = 18,827.90 : x
  2. Step 2: Convert to fraction form
    58,270.78/87,406.68 = 18,827.90/x
  3. Step 3: Cross multiply
    58,270.78x = 87,406.68 × 18,827.90
  4. Step 4: Simplify right side
    58,270.78x = 1,645,684,230.37
  5. Step 5: Solve for x
    x = 1,645,684,230.37/58,270.78
  6. Step 6: Final answer
    x = 28,242.01

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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.