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Finding the Fourth Proportional to 171,765.95, 257,528.20 and 75,657.55

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Solution

The fourth proportional to 171,765.95, 257,528.20 and 75,657.55 is: 113,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,765.95 : 257,528.20 = 75,657.55 : x
  2. Step 2: Convert to fraction form
    171,765.95/257,528.20 = 75,657.55/x
  3. Step 3: Cross multiply
    171,765.95x = 257,528.20 × 75,657.55
  4. Step 4: Simplify right side
    171,765.95x = 19,483,952,289.62
  5. Step 5: Solve for x
    x = 19,483,952,289.62/171,765.95
  6. Step 6: Final answer
    x = 113,433.15

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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.