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Finding the Fourth Proportional to 619,964.80, 929,716.80 and 245,910.40

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Solution

The fourth proportional to 619,964.80, 929,716.80 and 245,910.40 is: 368,774.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,964.80 : 929,716.80 = 245,910.40 : x
  2. Step 2: Convert to fraction form
    619,964.80/929,716.80 = 245,910.40/x
  3. Step 3: Cross multiply
    619,964.80x = 929,716.80 × 245,910.40
  4. Step 4: Simplify right side
    619,964.80x = 228,627,030,174.72
  5. Step 5: Solve for x
    x = 228,627,030,174.72/619,964.80
  6. Step 6: Final answer
    x = 368,774.21

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1.5x scale

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.