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Finding the Fourth Proportional to 152,911.50, 211,017.87 and 85,843.50

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Solution

The fourth proportional to 152,911.50, 211,017.87 and 85,843.50 is: 118,464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,911.50 : 211,017.87 = 85,843.50 : x
  2. Step 2: Convert to fraction form
    152,911.50/211,017.87 = 85,843.50/x
  3. Step 3: Cross multiply
    152,911.50x = 211,017.87 × 85,843.50
  4. Step 4: Simplify right side
    152,911.50x = 18,114,512,523.35
  5. Step 5: Solve for x
    x = 18,114,512,523.35/152,911.50
  6. Step 6: Final answer
    x = 118,464.03

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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.