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Finding the Fourth Proportional to 253,780.78, 350,194.20 and 146,330.06

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Solution

The fourth proportional to 253,780.78, 350,194.20 and 146,330.06 is: 201,922.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,780.78 : 350,194.20 = 146,330.06 : x
  2. Step 2: Convert to fraction form
    253,780.78/350,194.20 = 146,330.06/x
  3. Step 3: Cross multiply
    253,780.78x = 350,194.20 × 146,330.06
  4. Step 4: Simplify right side
    253,780.78x = 51,243,938,297.65
  5. Step 5: Solve for x
    x = 51,243,938,297.65/253,780.78
  6. Step 6: Final answer
    x = 201,922.06

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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.