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Finding the Fourth Proportional to 577,620.60, 866,488.80 and 198,491.40

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Solution

The fourth proportional to 577,620.60, 866,488.80 and 198,491.40 is: 297,757.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,620.60 : 866,488.80 = 198,491.40 : x
  2. Step 2: Convert to fraction form
    577,620.60/866,488.80 = 198,491.40/x
  3. Step 3: Cross multiply
    577,620.60x = 866,488.80 × 198,491.40
  4. Step 4: Simplify right side
    577,620.60x = 171,990,574,996.32
  5. Step 5: Solve for x
    x = 171,990,574,996.32/577,620.60
  6. Step 6: Final answer
    x = 297,757.00

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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.