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Finding the Fourth Proportional to 115,638.53, 173,485.40 and 36,752.90

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Solution

The fourth proportional to 115,638.53, 173,485.40 and 36,752.90 is: 55,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,638.53 : 173,485.40 = 36,752.90 : x
  2. Step 2: Convert to fraction form
    115,638.53/173,485.40 = 36,752.90/x
  3. Step 3: Cross multiply
    115,638.53x = 173,485.40 × 36,752.90
  4. Step 4: Simplify right side
    115,638.53x = 6,376,090,506.47
  5. Step 5: Solve for x
    x = 6,376,090,506.47/115,638.53
  6. Step 6: Final answer
    x = 55,138.12

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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.