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Finding the Fourth Proportional to 122,467.40, 183,701.10 and 106,915.40

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Solution

The fourth proportional to 122,467.40, 183,701.10 and 106,915.40 is: 160,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,467.40 : 183,701.10 = 106,915.40 : x
  2. Step 2: Convert to fraction form
    122,467.40/183,701.10 = 106,915.40/x
  3. Step 3: Cross multiply
    122,467.40x = 183,701.10 × 106,915.40
  4. Step 4: Simplify right side
    122,467.40x = 19,640,476,586.94
  5. Step 5: Solve for x
    x = 19,640,476,586.94/122,467.40
  6. Step 6: Final answer
    x = 160,373.10

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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.