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Finding the Fourth Proportional to 612,561.36, 918,843.12 and 238,584.36

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Solution

The fourth proportional to 612,561.36, 918,843.12 and 238,584.36 is: 357,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,561.36 : 918,843.12 = 238,584.36 : x
  2. Step 2: Convert to fraction form
    612,561.36/918,843.12 = 238,584.36/x
  3. Step 3: Cross multiply
    612,561.36x = 918,843.12 × 238,584.36
  4. Step 4: Simplify right side
    612,561.36x = 219,221,597,725.60
  5. Step 5: Solve for x
    x = 219,221,597,725.60/612,561.36
  6. Step 6: Final answer
    x = 357,876.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.