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Finding the Fourth Proportional to 172,857.39, 238,543.17 and 97,408.59

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Solution

The fourth proportional to 172,857.39, 238,543.17 and 97,408.59 is: 134,423.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,857.39 : 238,543.17 = 97,408.59 : x
  2. Step 2: Convert to fraction form
    172,857.39/238,543.17 = 97,408.59/x
  3. Step 3: Cross multiply
    172,857.39x = 238,543.17 × 97,408.59
  4. Step 4: Simplify right side
    172,857.39x = 23,236,153,843.83
  5. Step 5: Solve for x
    x = 23,236,153,843.83/172,857.39
  6. Step 6: Final answer
    x = 134,423.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.