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Finding the Fourth Proportional to 164,900.70, 247,059.45 and 139,823.10

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Solution

The fourth proportional to 164,900.70, 247,059.45 and 139,823.10 is: 209,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,900.70 : 247,059.45 = 139,823.10 : x
  2. Step 2: Convert to fraction form
    164,900.70/247,059.45 = 139,823.10/x
  3. Step 3: Cross multiply
    164,900.70x = 247,059.45 × 139,823.10
  4. Step 4: Simplify right side
    164,900.70x = 34,544,618,183.30
  5. Step 5: Solve for x
    x = 34,544,618,183.30/164,900.70
  6. Step 6: Final answer
    x = 209,487.40

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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.