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Finding the Fourth Proportional to 139,714.75, 193,002.42 and 124,602.58

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Solution

The fourth proportional to 139,714.75, 193,002.42 and 124,602.58 is: 172,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,714.75 : 193,002.42 = 124,602.58 : x
  2. Step 2: Convert to fraction form
    139,714.75/193,002.42 = 124,602.58/x
  3. Step 3: Cross multiply
    139,714.75x = 193,002.42 × 124,602.58
  4. Step 4: Simplify right side
    139,714.75x = 24,048,599,478.24
  5. Step 5: Solve for x
    x = 24,048,599,478.24/139,714.75
  6. Step 6: Final answer
    x = 172,126.42

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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.