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Finding the Fourth Proportional to 122,041.78, 183,090.26 and 65,880.68

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Solution

The fourth proportional to 122,041.78, 183,090.26 and 65,880.68 is: 98,835.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,041.78 : 183,090.26 = 65,880.68 : x
  2. Step 2: Convert to fraction form
    122,041.78/183,090.26 = 65,880.68/x
  3. Step 3: Cross multiply
    122,041.78x = 183,090.26 × 65,880.68
  4. Step 4: Simplify right side
    122,041.78x = 12,062,110,830.18
  5. Step 5: Solve for x
    x = 12,062,110,830.18/122,041.78
  6. Step 6: Final answer
    x = 98,835.91

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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.