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Finding the Fourth Proportional to 153,183.86, 211,393.89 and 85,199.21

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Solution

The fourth proportional to 153,183.86, 211,393.89 and 85,199.21 is: 117,575.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,183.86 : 211,393.89 = 85,199.21 : x
  2. Step 2: Convert to fraction form
    153,183.86/211,393.89 = 85,199.21/x
  3. Step 3: Cross multiply
    153,183.86x = 211,393.89 × 85,199.21
  4. Step 4: Simplify right side
    153,183.86x = 18,010,591,369.86
  5. Step 5: Solve for x
    x = 18,010,591,369.86/153,183.86
  6. Step 6: Final answer
    x = 117,575.00

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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.