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Finding the Fourth Proportional to 104,580.74, 156,783.49 and 72,897.86

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Solution

The fourth proportional to 104,580.74, 156,783.49 and 72,897.86 is: 109,285.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,580.74 : 156,783.49 = 72,897.86 : x
  2. Step 2: Convert to fraction form
    104,580.74/156,783.49 = 72,897.86/x
  3. Step 3: Cross multiply
    104,580.74x = 156,783.49 × 72,897.86
  4. Step 4: Simplify right side
    104,580.74x = 11,429,180,904.33
  5. Step 5: Solve for x
    x = 11,429,180,904.33/104,580.74
  6. Step 6: Final answer
    x = 109,285.71

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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.