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Finding the Fourth Proportional to 647,647.50, 971,540.36 and 174,339.66

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Solution

The fourth proportional to 647,647.50, 971,540.36 and 174,339.66 is: 261,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,647.50 : 971,540.36 = 174,339.66 : x
  2. Step 2: Convert to fraction form
    647,647.50/971,540.36 = 174,339.66/x
  3. Step 3: Cross multiply
    647,647.50x = 971,540.36 × 174,339.66
  4. Step 4: Simplify right side
    647,647.50x = 169,378,011,616.83
  5. Step 5: Solve for x
    x = 169,378,011,616.83/647,647.50
  6. Step 6: Final answer
    x = 261,528.09

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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.