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Finding the Fourth Proportional to 115,114.88, 172,695.74 and 48,555.25

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Solution

The fourth proportional to 115,114.88, 172,695.74 and 48,555.25 is: 72,842.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,114.88 : 172,695.74 = 48,555.25 : x
  2. Step 2: Convert to fraction form
    115,114.88/172,695.74 = 48,555.25/x
  3. Step 3: Cross multiply
    115,114.88x = 172,695.74 × 48,555.25
  4. Step 4: Simplify right side
    115,114.88x = 8,385,284,829.64
  5. Step 5: Solve for x
    x = 8,385,284,829.64/115,114.88
  6. Step 6: Final answer
    x = 72,842.75

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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.