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Finding the Fourth Proportional to 104,315.64, 156,473.88 and 73,289.40

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Solution

The fourth proportional to 104,315.64, 156,473.88 and 73,289.40 is: 109,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,315.64 : 156,473.88 = 73,289.40 : x
  2. Step 2: Convert to fraction form
    104,315.64/156,473.88 = 73,289.40/x
  3. Step 3: Cross multiply
    104,315.64x = 156,473.88 × 73,289.40
  4. Step 4: Simplify right side
    104,315.64x = 11,467,876,780.87
  5. Step 5: Solve for x
    x = 11,467,876,780.87/104,315.64
  6. Step 6: Final answer
    x = 109,934.40

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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.