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Finding the Fourth Proportional to 575,861.20, 863,791.80 and 256,012.45

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Solution

The fourth proportional to 575,861.20, 863,791.80 and 256,012.45 is: 384,018.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,861.20 : 863,791.80 = 256,012.45 : x
  2. Step 2: Convert to fraction form
    575,861.20/863,791.80 = 256,012.45/x
  3. Step 3: Cross multiply
    575,861.20x = 863,791.80 × 256,012.45
  4. Step 4: Simplify right side
    575,861.20x = 221,141,455,007.91
  5. Step 5: Solve for x
    x = 221,141,455,007.91/575,861.20
  6. Step 6: Final answer
    x = 384,018.68

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Similar ratio
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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.