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Finding the Fourth Proportional to 109,670.86, 151,345.11 and 59,369.50

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Solution

The fourth proportional to 109,670.86, 151,345.11 and 59,369.50 is: 81,929.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,670.86 : 151,345.11 = 59,369.50 : x
  2. Step 2: Convert to fraction form
    109,670.86/151,345.11 = 59,369.50/x
  3. Step 3: Cross multiply
    109,670.86x = 151,345.11 × 59,369.50
  4. Step 4: Simplify right side
    109,670.86x = 8,985,283,508.15
  5. Step 5: Solve for x
    x = 8,985,283,508.15/109,670.86
  6. Step 6: Final answer
    x = 81,929.54

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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.