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Finding the Fourth Proportional to 415,009.20, 622,586.70 and 148,924.20

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Solution

The fourth proportional to 415,009.20, 622,586.70 and 148,924.20 is: 223,412.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,009.20 : 622,586.70 = 148,924.20 : x
  2. Step 2: Convert to fraction form
    415,009.20/622,586.70 = 148,924.20/x
  3. Step 3: Cross multiply
    415,009.20x = 622,586.70 × 148,924.20
  4. Step 4: Simplify right side
    415,009.20x = 92,718,226,228.14
  5. Step 5: Solve for x
    x = 92,718,226,228.14/415,009.20
  6. Step 6: Final answer
    x = 223,412.46

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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.