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Finding the Fourth Proportional to 118,643.60, 177,965.40 and 116,800.40

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Solution

The fourth proportional to 118,643.60, 177,965.40 and 116,800.40 is: 175,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,643.60 : 177,965.40 = 116,800.40 : x
  2. Step 2: Convert to fraction form
    118,643.60/177,965.40 = 116,800.40/x
  3. Step 3: Cross multiply
    118,643.60x = 177,965.40 × 116,800.40
  4. Step 4: Simplify right side
    118,643.60x = 20,786,429,906.16
  5. Step 5: Solve for x
    x = 20,786,429,906.16/118,643.60
  6. Step 6: Final answer
    x = 175,200.60

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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.