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Finding the Fourth Proportional to 225,847.72, 311,675.34 and 123,877.36

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Solution

The fourth proportional to 225,847.72, 311,675.34 and 123,877.36 is: 170,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,847.72 : 311,675.34 = 123,877.36 : x
  2. Step 2: Convert to fraction form
    225,847.72/311,675.34 = 123,877.36/x
  3. Step 3: Cross multiply
    225,847.72x = 311,675.34 × 123,877.36
  4. Step 4: Simplify right side
    225,847.72x = 38,609,518,296.30
  5. Step 5: Solve for x
    x = 38,609,518,296.30/225,847.72
  6. Step 6: Final answer
    x = 170,953.77

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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.