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Finding the Fourth Proportional to 330,494.46, 495,653.13 and 143,461.50

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Solution

The fourth proportional to 330,494.46, 495,653.13 and 143,461.50 is: 215,153.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,494.46 : 495,653.13 = 143,461.50 : x
  2. Step 2: Convert to fraction form
    330,494.46/495,653.13 = 143,461.50/x
  3. Step 3: Cross multiply
    330,494.46x = 495,653.13 × 143,461.50
  4. Step 4: Simplify right side
    330,494.46x = 71,107,141,509.50
  5. Step 5: Solve for x
    x = 71,107,141,509.50/330,494.46
  6. Step 6: Final answer
    x = 215,153.81

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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.