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Finding the Fourth Proportional to 624,633.13, 861,993.66 and 348,991.05

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Solution

The fourth proportional to 624,633.13, 861,993.66 and 348,991.05 is: 481,607.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,633.13 : 861,993.66 = 348,991.05 : x
  2. Step 2: Convert to fraction form
    624,633.13/861,993.66 = 348,991.05/x
  3. Step 3: Cross multiply
    624,633.13x = 861,993.66 × 348,991.05
  4. Step 4: Simplify right side
    624,633.13x = 300,828,072,496.74
  5. Step 5: Solve for x
    x = 300,828,072,496.74/624,633.13
  6. Step 6: Final answer
    x = 481,607.62

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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.