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Finding the Fourth Proportional to 619,420.32, 929,290.32 and 198,699.84

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Solution

The fourth proportional to 619,420.32, 929,290.32 and 198,699.84 is: 298,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,420.32 : 929,290.32 = 198,699.84 : x
  2. Step 2: Convert to fraction form
    619,420.32/929,290.32 = 198,699.84/x
  3. Step 3: Cross multiply
    619,420.32x = 929,290.32 × 198,699.84
  4. Step 4: Simplify right side
    619,420.32x = 184,649,837,897.55
  5. Step 5: Solve for x
    x = 184,649,837,897.55/619,420.32
  6. Step 6: Final answer
    x = 298,101.03

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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.