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Finding the Fourth Proportional to 73,037.78, 109,612.10 and 49,289.12

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Solution

The fourth proportional to 73,037.78, 109,612.10 and 49,289.12 is: 73,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,037.78 : 109,612.10 = 49,289.12 : x
  2. Step 2: Convert to fraction form
    73,037.78/109,612.10 = 49,289.12/x
  3. Step 3: Cross multiply
    73,037.78x = 109,612.10 × 49,289.12
  4. Step 4: Simplify right side
    73,037.78x = 5,402,683,950.35
  5. Step 5: Solve for x
    x = 5,402,683,950.35/73,037.78
  6. Step 6: Final answer
    x = 73,971.09

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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.