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Finding the Fourth Proportional to 282,118.98, 389,331.36 and 154,794.54

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Solution

The fourth proportional to 282,118.98, 389,331.36 and 154,794.54 is: 213,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,118.98 : 389,331.36 = 154,794.54 : x
  2. Step 2: Convert to fraction form
    282,118.98/389,331.36 = 154,794.54/x
  3. Step 3: Cross multiply
    282,118.98x = 389,331.36 × 154,794.54
  4. Step 4: Simplify right side
    282,118.98x = 60,266,368,778.77
  5. Step 5: Solve for x
    x = 60,266,368,778.77/282,118.98
  6. Step 6: Final answer
    x = 213,620.40

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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.