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Finding the Fourth Proportional to 178,339.88, 246,068.60 and 120,987.02

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Solution

The fourth proportional to 178,339.88, 246,068.60 and 120,987.02 is: 166,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,339.88 : 246,068.60 = 120,987.02 : x
  2. Step 2: Convert to fraction form
    178,339.88/246,068.60 = 120,987.02/x
  3. Step 3: Cross multiply
    178,339.88x = 246,068.60 × 120,987.02
  4. Step 4: Simplify right side
    178,339.88x = 29,771,106,629.57
  5. Step 5: Solve for x
    x = 29,771,106,629.57/178,339.88
  6. Step 6: Final answer
    x = 166,934.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.