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Finding the Fourth Proportional to 178,390.78, 246,308.42 and 114,839.28

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Solution

The fourth proportional to 178,390.78, 246,308.42 and 114,839.28 is: 158,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,390.78 : 246,308.42 = 114,839.28 : x
  2. Step 2: Convert to fraction form
    178,390.78/246,308.42 = 114,839.28/x
  3. Step 3: Cross multiply
    178,390.78x = 246,308.42 × 114,839.28
  4. Step 4: Simplify right side
    178,390.78x = 28,285,881,897.84
  5. Step 5: Solve for x
    x = 28,285,881,897.84/178,390.78
  6. Step 6: Final answer
    x = 158,561.35

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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.