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Finding the Fourth Proportional to 243,197.52, 364,832.82 and 85,398.18

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Solution

The fourth proportional to 243,197.52, 364,832.82 and 85,398.18 is: 128,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,197.52 : 364,832.82 = 85,398.18 : x
  2. Step 2: Convert to fraction form
    243,197.52/364,832.82 = 85,398.18/x
  3. Step 3: Cross multiply
    243,197.52x = 364,832.82 × 85,398.18
  4. Step 4: Simplify right side
    243,197.52x = 31,156,058,832.27
  5. Step 5: Solve for x
    x = 31,156,058,832.27/243,197.52
  6. Step 6: Final answer
    x = 128,110.10

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1.5x scale

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.