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Finding the Fourth Proportional to 115,801.60, 173,572.80 and 65,905.60

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Solution

The fourth proportional to 115,801.60, 173,572.80 and 65,905.60 is: 98,784.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,801.60 : 173,572.80 = 65,905.60 : x
  2. Step 2: Convert to fraction form
    115,801.60/173,572.80 = 65,905.60/x
  3. Step 3: Cross multiply
    115,801.60x = 173,572.80 × 65,905.60
  4. Step 4: Simplify right side
    115,801.60x = 11,439,419,527.68
  5. Step 5: Solve for x
    x = 11,439,419,527.68/115,801.60
  6. Step 6: Final answer
    x = 98,784.64

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1.5x scale

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.