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Finding the Fourth Proportional to 330,665.72, 495,692.58 and 120,247.16

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Solution

The fourth proportional to 330,665.72, 495,692.58 and 120,247.16 is: 180,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,665.72 : 495,692.58 = 120,247.16 : x
  2. Step 2: Convert to fraction form
    330,665.72/495,692.58 = 120,247.16/x
  3. Step 3: Cross multiply
    330,665.72x = 495,692.58 × 120,247.16
  4. Step 4: Simplify right side
    330,665.72x = 59,605,624,978.07
  5. Step 5: Solve for x
    x = 59,605,624,978.07/330,665.72
  6. Step 6: Final answer
    x = 180,259.46

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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.