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Finding the Fourth Proportional to 577,878.60, 866,234.70 and 262,561.80

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Solution

The fourth proportional to 577,878.60, 866,234.70 and 262,561.80 is: 393,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,878.60 : 866,234.70 = 262,561.80 : x
  2. Step 2: Convert to fraction form
    577,878.60/866,234.70 = 262,561.80/x
  3. Step 3: Cross multiply
    577,878.60x = 866,234.70 × 262,561.80
  4. Step 4: Simplify right side
    577,878.60x = 227,440,142,054.46
  5. Step 5: Solve for x
    x = 227,440,142,054.46/577,878.60
  6. Step 6: Final answer
    x = 393,577.72

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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.