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Finding the Fourth Proportional to 577,846.20, 866,769.30 and 388,889.40

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Solution

The fourth proportional to 577,846.20, 866,769.30 and 388,889.40 is: 583,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,846.20 : 866,769.30 = 388,889.40 : x
  2. Step 2: Convert to fraction form
    577,846.20/866,769.30 = 388,889.40/x
  3. Step 3: Cross multiply
    577,846.20x = 866,769.30 × 388,889.40
  4. Step 4: Simplify right side
    577,846.20x = 337,077,393,015.42
  5. Step 5: Solve for x
    x = 337,077,393,015.42/577,846.20
  6. Step 6: Final answer
    x = 583,334.10

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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.