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Finding the Fourth Proportional to 289,674.80, 434,512.20 and 195,671.60

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Solution

The fourth proportional to 289,674.80, 434,512.20 and 195,671.60 is: 293,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,674.80 : 434,512.20 = 195,671.60 : x
  2. Step 2: Convert to fraction form
    289,674.80/434,512.20 = 195,671.60/x
  3. Step 3: Cross multiply
    289,674.80x = 434,512.20 × 195,671.60
  4. Step 4: Simplify right side
    289,674.80x = 85,021,697,393.52
  5. Step 5: Solve for x
    x = 85,021,697,393.52/289,674.80
  6. Step 6: Final answer
    x = 293,507.40

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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.