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Finding the Fourth Proportional to 115,328.70, 172,960.65 and 36,467.10

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Solution

The fourth proportional to 115,328.70, 172,960.65 and 36,467.10 is: 54,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,328.70 : 172,960.65 = 36,467.10 : x
  2. Step 2: Convert to fraction form
    115,328.70/172,960.65 = 36,467.10/x
  3. Step 3: Cross multiply
    115,328.70x = 172,960.65 × 36,467.10
  4. Step 4: Simplify right side
    115,328.70x = 6,307,373,319.62
  5. Step 5: Solve for x
    x = 6,307,373,319.62/115,328.70
  6. Step 6: Final answer
    x = 54,690.41

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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.