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Finding the Fourth Proportional to 448,626.70, 618,951.72 and 255,014.83

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Solution

The fourth proportional to 448,626.70, 618,951.72 and 255,014.83 is: 351,833.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,626.70 : 618,951.72 = 255,014.83 : x
  2. Step 2: Convert to fraction form
    448,626.70/618,951.72 = 255,014.83/x
  3. Step 3: Cross multiply
    448,626.70x = 618,951.72 × 255,014.83
  4. Step 4: Simplify right side
    448,626.70x = 157,841,867,654.01
  5. Step 5: Solve for x
    x = 157,841,867,654.01/448,626.70
  6. Step 6: Final answer
    x = 351,833.42

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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.