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Finding the Fourth Proportional to 415,024.60, 621,103.30 and 248,931.80

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Solution

The fourth proportional to 415,024.60, 621,103.30 and 248,931.80 is: 372,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,024.60 : 621,103.30 = 248,931.80 : x
  2. Step 2: Convert to fraction form
    415,024.60/621,103.30 = 248,931.80/x
  3. Step 3: Cross multiply
    415,024.60x = 621,103.30 × 248,931.80
  4. Step 4: Simplify right side
    415,024.60x = 154,612,362,454.94
  5. Step 5: Solve for x
    x = 154,612,362,454.94/415,024.60
  6. Step 6: Final answer
    x = 372,537.83

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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.