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Finding the Fourth Proportional to 619,681.89, 929,325.99 and 198,859.35

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Solution

The fourth proportional to 619,681.89, 929,325.99 and 198,859.35 is: 298,225.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,681.89 : 929,325.99 = 198,859.35 : x
  2. Step 2: Convert to fraction form
    619,681.89/929,325.99 = 198,859.35/x
  3. Step 3: Cross multiply
    619,681.89x = 929,325.99 × 198,859.35
  4. Step 4: Simplify right side
    619,681.89x = 184,805,162,309.51
  5. Step 5: Solve for x
    x = 184,805,162,309.51/619,681.89
  6. Step 6: Final answer
    x = 298,225.86

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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.