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Finding the Fourth Proportional to 186,906.72, 280,261.57 and 81,602.67

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Solution

The fourth proportional to 186,906.72, 280,261.57 and 81,602.67 is: 122,361.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,906.72 : 280,261.57 = 81,602.67 : x
  2. Step 2: Convert to fraction form
    186,906.72/280,261.57 = 81,602.67/x
  3. Step 3: Cross multiply
    186,906.72x = 280,261.57 × 81,602.67
  4. Step 4: Simplify right side
    186,906.72x = 22,870,092,907.04
  5. Step 5: Solve for x
    x = 22,870,092,907.04/186,906.72
  6. Step 6: Final answer
    x = 122,361.00

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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.