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Finding the Fourth Proportional to 186,863.30, 280,128.30 and 68,507.06

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Solution

The fourth proportional to 186,863.30, 280,128.30 and 68,507.06 is: 102,699.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,863.30 : 280,128.30 = 68,507.06 : x
  2. Step 2: Convert to fraction form
    186,863.30/280,128.30 = 68,507.06/x
  3. Step 3: Cross multiply
    186,863.30x = 280,128.30 × 68,507.06
  4. Step 4: Simplify right side
    186,863.30x = 19,190,766,255.80
  5. Step 5: Solve for x
    x = 19,190,766,255.80/186,863.30
  6. Step 6: Final answer
    x = 102,699.49

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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.