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Finding the Fourth Proportional to 381,886.60, 572,052.30 and 195,003.40

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Solution

The fourth proportional to 381,886.60, 572,052.30 and 195,003.40 is: 292,108.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,886.60 : 572,052.30 = 195,003.40 : x
  2. Step 2: Convert to fraction form
    381,886.60/572,052.30 = 195,003.40/x
  3. Step 3: Cross multiply
    381,886.60x = 572,052.30 × 195,003.40
  4. Step 4: Simplify right side
    381,886.60x = 111,552,143,477.82
  5. Step 5: Solve for x
    x = 111,552,143,477.82/381,886.60
  6. Step 6: Final answer
    x = 292,108.03

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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.