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Finding the Fourth Proportional to 122,722.80, 183,954.60 and 70,018.80

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Solution

The fourth proportional to 122,722.80, 183,954.60 and 70,018.80 is: 104,954.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,722.80 : 183,954.60 = 70,018.80 : x
  2. Step 2: Convert to fraction form
    122,722.80/183,954.60 = 70,018.80/x
  3. Step 3: Cross multiply
    122,722.80x = 183,954.60 × 70,018.80
  4. Step 4: Simplify right side
    122,722.80x = 12,880,280,346.48
  5. Step 5: Solve for x
    x = 12,880,280,346.48/122,722.80
  6. Step 6: Final answer
    x = 104,954.26

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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.