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Finding the Fourth Proportional to 118,935.60, 178,403.40 and 117,092.40

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Solution

The fourth proportional to 118,935.60, 178,403.40 and 117,092.40 is: 175,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,935.60 : 178,403.40 = 117,092.40 : x
  2. Step 2: Convert to fraction form
    118,935.60/178,403.40 = 117,092.40/x
  3. Step 3: Cross multiply
    118,935.60x = 178,403.40 × 117,092.40
  4. Step 4: Simplify right side
    118,935.60x = 20,889,682,274.16
  5. Step 5: Solve for x
    x = 20,889,682,274.16/118,935.60
  6. Step 6: Final answer
    x = 175,638.60

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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.