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Finding the Fourth Proportional to 556,783.60, 768,353.10 and 327,366.64

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Solution

The fourth proportional to 556,783.60, 768,353.10 and 327,366.64 is: 451,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,783.60 : 768,353.10 = 327,366.64 : x
  2. Step 2: Convert to fraction form
    556,783.60/768,353.10 = 327,366.64/x
  3. Step 3: Cross multiply
    556,783.60x = 768,353.10 × 327,366.64
  4. Step 4: Simplify right side
    556,783.60x = 251,533,172,680.58
  5. Step 5: Solve for x
    x = 251,533,172,680.58/556,783.60
  6. Step 6: Final answer
    x = 451,761.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.