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Finding the Fourth Proportional to 330,405.70, 455,931.60 and 183,235.30

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Solution

The fourth proportional to 330,405.70, 455,931.60 and 183,235.30 is: 252,849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,405.70 : 455,931.60 = 183,235.30 : x
  2. Step 2: Convert to fraction form
    330,405.70/455,931.60 = 183,235.30/x
  3. Step 3: Cross multiply
    330,405.70x = 455,931.60 × 183,235.30
  4. Step 4: Simplify right side
    330,405.70x = 83,542,763,505.48
  5. Step 5: Solve for x
    x = 83,542,763,505.48/330,405.70
  6. Step 6: Final answer
    x = 252,849.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.