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Finding the Fourth Proportional to 58,218, 80,353.80 and 36,993.12

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Solution

The fourth proportional to 58,218, 80,353.80 and 36,993.12 is: 51,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,218 : 80,353.80 = 36,993.12 : x
  2. Step 2: Convert to fraction form
    58,218/80,353.80 = 36,993.12/x
  3. Step 3: Cross multiply
    58,218x = 80,353.80 × 36,993.12
  4. Step 4: Simplify right side
    58,218x = 2,972,537,765.86
  5. Step 5: Solve for x
    x = 2,972,537,765.86/58,218
  6. Step 6: Final answer
    x = 51,058.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.