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Finding the Fourth Proportional to 122,034.60, 183,051.90 and 74,795.40

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Solution

The fourth proportional to 122,034.60, 183,051.90 and 74,795.40 is: 112,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,034.60 : 183,051.90 = 74,795.40 : x
  2. Step 2: Convert to fraction form
    122,034.60/183,051.90 = 74,795.40/x
  3. Step 3: Cross multiply
    122,034.60x = 183,051.90 × 74,795.40
  4. Step 4: Simplify right side
    122,034.60x = 13,691,440,081.26
  5. Step 5: Solve for x
    x = 13,691,440,081.26/122,034.60
  6. Step 6: Final answer
    x = 112,193.10

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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.