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Finding the Fourth Proportional to 140,803.60, 211,205.40 and 131,472.40

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Solution

The fourth proportional to 140,803.60, 211,205.40 and 131,472.40 is: 197,208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,803.60 : 211,205.40 = 131,472.40 : x
  2. Step 2: Convert to fraction form
    140,803.60/211,205.40 = 131,472.40/x
  3. Step 3: Cross multiply
    140,803.60x = 211,205.40 × 131,472.40
  4. Step 4: Simplify right side
    140,803.60x = 27,767,680,830.96
  5. Step 5: Solve for x
    x = 27,767,680,830.96/140,803.60
  6. Step 6: Final answer
    x = 197,208.60

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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.