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Finding the Fourth Proportional to 109,705.86, 151,394.08 and 59,404.86

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Solution

The fourth proportional to 109,705.86, 151,394.08 and 59,404.86 is: 81,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,705.86 : 151,394.08 = 59,404.86 : x
  2. Step 2: Convert to fraction form
    109,705.86/151,394.08 = 59,404.86/x
  3. Step 3: Cross multiply
    109,705.86x = 151,394.08 × 59,404.86
  4. Step 4: Simplify right side
    109,705.86x = 8,993,544,127.23
  5. Step 5: Solve for x
    x = 8,993,544,127.23/109,705.86
  6. Step 6: Final answer
    x = 81,978.70

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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.