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Finding the Fourth Proportional to 577,490.40, 866,219.40 and 261,946.80

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Solution

The fourth proportional to 577,490.40, 866,219.40 and 261,946.80 is: 392,912.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,490.40 : 866,219.40 = 261,946.80 : x
  2. Step 2: Convert to fraction form
    577,490.40/866,219.40 = 261,946.80/x
  3. Step 3: Cross multiply
    577,490.40x = 866,219.40 × 261,946.80
  4. Step 4: Simplify right side
    577,490.40x = 226,903,399,927.92
  5. Step 5: Solve for x
    x = 226,903,399,927.92/577,490.40
  6. Step 6: Final answer
    x = 392,912.85

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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.