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Finding the Fourth Proportional to 177,765.60, 266,551.20 and 72,465.60

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Solution

The fourth proportional to 177,765.60, 266,551.20 and 72,465.60 is: 108,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,765.60 : 266,551.20 = 72,465.60 : x
  2. Step 2: Convert to fraction form
    177,765.60/266,551.20 = 72,465.60/x
  3. Step 3: Cross multiply
    177,765.60x = 266,551.20 × 72,465.60
  4. Step 4: Simplify right side
    177,765.60x = 19,315,792,638.72
  5. Step 5: Solve for x
    x = 19,315,792,638.72/177,765.60
  6. Step 6: Final answer
    x = 108,658.78

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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.