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Finding the Fourth Proportional to 577,614.60, 866,479.80 and 198,485.40

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Solution

The fourth proportional to 577,614.60, 866,479.80 and 198,485.40 is: 297,748.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,614.60 : 866,479.80 = 198,485.40 : x
  2. Step 2: Convert to fraction form
    577,614.60/866,479.80 = 198,485.40/x
  3. Step 3: Cross multiply
    577,614.60x = 866,479.80 × 198,485.40
  4. Step 4: Simplify right side
    577,614.60x = 171,983,589,694.92
  5. Step 5: Solve for x
    x = 171,983,589,694.92/577,614.60
  6. Step 6: Final answer
    x = 297,748.00

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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.