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Finding the Fourth Proportional to 461,722.80, 692,584.20 and 146,211.60

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Solution

The fourth proportional to 461,722.80, 692,584.20 and 146,211.60 is: 219,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,722.80 : 692,584.20 = 146,211.60 : x
  2. Step 2: Convert to fraction form
    461,722.80/692,584.20 = 146,211.60/x
  3. Step 3: Cross multiply
    461,722.80x = 692,584.20 × 146,211.60
  4. Step 4: Simplify right side
    461,722.80x = 101,263,844,016.72
  5. Step 5: Solve for x
    x = 101,263,844,016.72/461,722.80
  6. Step 6: Final answer
    x = 219,317.40

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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.