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Finding the Fourth Proportional to 419,504.33, 578,888.70 and 247,382.82

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Solution

The fourth proportional to 419,504.33, 578,888.70 and 247,382.82 is: 341,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,504.33 : 578,888.70 = 247,382.82 : x
  2. Step 2: Convert to fraction form
    419,504.33/578,888.70 = 247,382.82/x
  3. Step 3: Cross multiply
    419,504.33x = 578,888.70 × 247,382.82
  4. Step 4: Simplify right side
    419,504.33x = 143,207,119,072.13
  5. Step 5: Solve for x
    x = 143,207,119,072.13/419,504.33
  6. Step 6: Final answer
    x = 341,372.21

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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.