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Finding the Fourth Proportional to 115,219.68, 172,860.88 and 35,255.86

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Solution

The fourth proportional to 115,219.68, 172,860.88 and 35,255.86 is: 52,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,219.68 : 172,860.88 = 35,255.86 : x
  2. Step 2: Convert to fraction form
    115,219.68/172,860.88 = 35,255.86/x
  3. Step 3: Cross multiply
    115,219.68x = 172,860.88 × 35,255.86
  4. Step 4: Simplify right side
    115,219.68x = 6,094,358,984.76
  5. Step 5: Solve for x
    x = 6,094,358,984.76/115,219.68
  6. Step 6: Final answer
    x = 52,893.39

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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.