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Finding the Fourth Proportional to 109,358.70, 164,038.05 and 73,929.30

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Solution

The fourth proportional to 109,358.70, 164,038.05 and 73,929.30 is: 110,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,358.70 : 164,038.05 = 73,929.30 : x
  2. Step 2: Convert to fraction form
    109,358.70/164,038.05 = 73,929.30/x
  3. Step 3: Cross multiply
    109,358.70x = 164,038.05 × 73,929.30
  4. Step 4: Simplify right side
    109,358.70x = 12,127,218,209.87
  5. Step 5: Solve for x
    x = 12,127,218,209.87/109,358.70
  6. Step 6: Final answer
    x = 110,893.95

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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.