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Finding the Fourth Proportional to 405,171.60, 607,757.40 and 279,200.40

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Solution

The fourth proportional to 405,171.60, 607,757.40 and 279,200.40 is: 418,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,171.60 : 607,757.40 = 279,200.40 : x
  2. Step 2: Convert to fraction form
    405,171.60/607,757.40 = 279,200.40/x
  3. Step 3: Cross multiply
    405,171.60x = 607,757.40 × 279,200.40
  4. Step 4: Simplify right side
    405,171.60x = 169,686,109,182.96
  5. Step 5: Solve for x
    x = 169,686,109,182.96/405,171.60
  6. Step 6: Final answer
    x = 418,800.60

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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.