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Finding the Fourth Proportional to 203,877.90, 305,865.45 and 98,610.30

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Solution

The fourth proportional to 203,877.90, 305,865.45 and 98,610.30 is: 147,938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,877.90 : 305,865.45 = 98,610.30 : x
  2. Step 2: Convert to fraction form
    203,877.90/305,865.45 = 98,610.30/x
  3. Step 3: Cross multiply
    203,877.90x = 305,865.45 × 98,610.30
  4. Step 4: Simplify right side
    203,877.90x = 30,161,483,784.14
  5. Step 5: Solve for x
    x = 30,161,483,784.14/203,877.90
  6. Step 6: Final answer
    x = 147,938.96

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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.