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Finding the Fourth Proportional to 619,261.80, 928,892.70 and 198,580.20

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Solution

The fourth proportional to 619,261.80, 928,892.70 and 198,580.20 is: 297,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,261.80 : 928,892.70 = 198,580.20 : x
  2. Step 2: Convert to fraction form
    619,261.80/928,892.70 = 198,580.20/x
  3. Step 3: Cross multiply
    619,261.80x = 928,892.70 × 198,580.20
  4. Step 4: Simplify right side
    619,261.80x = 184,459,698,144.54
  5. Step 5: Solve for x
    x = 184,459,698,144.54/619,261.80
  6. Step 6: Final answer
    x = 297,870.30

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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.