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Finding the Fourth Proportional to 288,697.50, 398,577.51 and 188,270.46

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Solution

The fourth proportional to 288,697.50, 398,577.51 and 188,270.46 is: 259,927.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,697.50 : 398,577.51 = 188,270.46 : x
  2. Step 2: Convert to fraction form
    288,697.50/398,577.51 = 188,270.46/x
  3. Step 3: Cross multiply
    288,697.50x = 398,577.51 × 188,270.46
  4. Step 4: Simplify right side
    288,697.50x = 75,040,371,153.35
  5. Step 5: Solve for x
    x = 75,040,371,153.35/288,697.50
  6. Step 6: Final answer
    x = 259,927.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.