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Finding the Fourth Proportional to 276,568.70, 413,868.90 and 191,931.80

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Solution

The fourth proportional to 276,568.70, 413,868.90 and 191,931.80 is: 287,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,568.70 : 413,868.90 = 191,931.80 : x
  2. Step 2: Convert to fraction form
    276,568.70/413,868.90 = 191,931.80/x
  3. Step 3: Cross multiply
    276,568.70x = 413,868.90 × 191,931.80
  4. Step 4: Simplify right side
    276,568.70x = 79,434,602,941.02
  5. Step 5: Solve for x
    x = 79,434,602,941.02/276,568.70
  6. Step 6: Final answer
    x = 287,214.72

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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.