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Finding the Fourth Proportional to 624,645.40, 862,009.57 and 338,165.41

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Solution

The fourth proportional to 624,645.40, 862,009.57 and 338,165.41 is: 466,667.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,645.40 : 862,009.57 = 338,165.41 : x
  2. Step 2: Convert to fraction form
    624,645.40/862,009.57 = 338,165.41/x
  3. Step 3: Cross multiply
    624,645.40x = 862,009.57 × 338,165.41
  4. Step 4: Simplify right side
    624,645.40x = 291,501,819,662.97
  5. Step 5: Solve for x
    x = 291,501,819,662.97/624,645.40
  6. Step 6: Final answer
    x = 466,667.68

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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.