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Finding the Fourth Proportional to 116,518.80, 174,907.80 and 72,195.60

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Solution

The fourth proportional to 116,518.80, 174,907.80 and 72,195.60 is: 108,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,518.80 : 174,907.80 = 72,195.60 : x
  2. Step 2: Convert to fraction form
    116,518.80/174,907.80 = 72,195.60/x
  3. Step 3: Cross multiply
    116,518.80x = 174,907.80 × 72,195.60
  4. Step 4: Simplify right side
    116,518.80x = 12,627,573,565.68
  5. Step 5: Solve for x
    x = 12,627,573,565.68/116,518.80
  6. Step 6: Final answer
    x = 108,373.70

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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.