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Finding the Fourth Proportional to 172,905.90, 259,358.85 and 48,246.90

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Solution

The fourth proportional to 172,905.90, 259,358.85 and 48,246.90 is: 72,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,905.90 : 259,358.85 = 48,246.90 : x
  2. Step 2: Convert to fraction form
    172,905.90/259,358.85 = 48,246.90/x
  3. Step 3: Cross multiply
    172,905.90x = 259,358.85 × 48,246.90
  4. Step 4: Simplify right side
    172,905.90x = 12,513,260,500.07
  5. Step 5: Solve for x
    x = 12,513,260,500.07/172,905.90
  6. Step 6: Final answer
    x = 72,370.35

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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.