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Finding the Fourth Proportional to 619,394.67, 929,004.53 and 198,615.87

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Solution

The fourth proportional to 619,394.67, 929,004.53 and 198,615.87 is: 297,895.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,394.67 : 929,004.53 = 198,615.87 : x
  2. Step 2: Convert to fraction form
    619,394.67/929,004.53 = 198,615.87/x
  3. Step 3: Cross multiply
    619,394.67x = 929,004.53 × 198,615.87
  4. Step 4: Simplify right side
    619,394.67x = 184,515,041,966.81
  5. Step 5: Solve for x
    x = 184,515,041,966.81/619,394.67
  6. Step 6: Final answer
    x = 297,895.75

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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.