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Finding the Fourth Proportional to 518,388.45, 777,466.03 and 185,964.45

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Solution

The fourth proportional to 518,388.45, 777,466.03 and 185,964.45 is: 278,904.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,388.45 : 777,466.03 = 185,964.45 : x
  2. Step 2: Convert to fraction form
    518,388.45/777,466.03 = 185,964.45/x
  3. Step 3: Cross multiply
    518,388.45x = 777,466.03 × 185,964.45
  4. Step 4: Simplify right side
    518,388.45x = 144,581,042,662.63
  5. Step 5: Solve for x
    x = 144,581,042,662.63/518,388.45
  6. Step 6: Final answer
    x = 278,904.83

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Double scale
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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.