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Finding the Fourth Proportional to 456,331.20, 683,184.60 and 279,184.20

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Solution

The fourth proportional to 456,331.20, 683,184.60 and 279,184.20 is: 417,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,331.20 : 683,184.60 = 279,184.20 : x
  2. Step 2: Convert to fraction form
    456,331.20/683,184.60 = 279,184.20/x
  3. Step 3: Cross multiply
    456,331.20x = 683,184.60 × 279,184.20
  4. Step 4: Simplify right side
    456,331.20x = 190,734,346,003.32
  5. Step 5: Solve for x
    x = 190,734,346,003.32/456,331.20
  6. Step 6: Final answer
    x = 417,973.49

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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.