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Finding the Fourth Proportional to 553,584.57, 764,003.14 and 338,866.53

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Solution

The fourth proportional to 553,584.57, 764,003.14 and 338,866.53 is: 467,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,584.57 : 764,003.14 = 338,866.53 : x
  2. Step 2: Convert to fraction form
    553,584.57/764,003.14 = 338,866.53/x
  3. Step 3: Cross multiply
    553,584.57x = 764,003.14 × 338,866.53
  4. Step 4: Simplify right side
    553,584.57x = 258,895,092,960.90
  5. Step 5: Solve for x
    x = 258,895,092,960.90/553,584.57
  6. Step 6: Final answer
    x = 467,670.36

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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.