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Finding the Fourth Proportional to 619,643.70, 929,595.15 and 198,962.10

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Solution

The fourth proportional to 619,643.70, 929,595.15 and 198,962.10 is: 298,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,643.70 : 929,595.15 = 198,962.10 : x
  2. Step 2: Convert to fraction form
    619,643.70/929,595.15 = 198,962.10/x
  3. Step 3: Cross multiply
    619,643.70x = 929,595.15 × 198,962.10
  4. Step 4: Simplify right side
    619,643.70x = 184,954,203,193.82
  5. Step 5: Solve for x
    x = 184,954,203,193.82/619,643.70
  6. Step 6: Final answer
    x = 298,484.76

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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.