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Finding the Fourth Proportional to 276,368.70, 413,568.90 and 191,731.80

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Solution

The fourth proportional to 276,368.70, 413,568.90 and 191,731.80 is: 286,914.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,368.70 : 413,568.90 = 191,731.80 : x
  2. Step 2: Convert to fraction form
    276,368.70/413,568.90 = 191,731.80/x
  3. Step 3: Cross multiply
    276,368.70x = 413,568.90 × 191,731.80
  4. Step 4: Simplify right side
    276,368.70x = 79,294,309,621.02
  5. Step 5: Solve for x
    x = 79,294,309,621.02/276,368.70
  6. Step 6: Final answer
    x = 286,914.94

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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.