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Finding the Fourth Proportional to 553,591.60, 764,012.84 and 338,873.56

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Solution

The fourth proportional to 553,591.60, 764,012.84 and 338,873.56 is: 467,680.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,591.60 : 764,012.84 = 338,873.56 : x
  2. Step 2: Convert to fraction form
    553,591.60/764,012.84 = 338,873.56/x
  3. Step 3: Cross multiply
    553,591.60x = 764,012.84 × 338,873.56
  4. Step 4: Simplify right side
    553,591.60x = 258,903,750,976.51
  5. Step 5: Solve for x
    x = 258,903,750,976.51/553,591.60
  6. Step 6: Final answer
    x = 467,680.06

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1.5x scale

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.