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Finding the Fourth Proportional to 664,472.64, 916,959.04 and 362,668.80

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Solution

The fourth proportional to 664,472.64, 916,959.04 and 362,668.80 is: 500,475.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,472.64 : 916,959.04 = 362,668.80 : x
  2. Step 2: Convert to fraction form
    664,472.64/916,959.04 = 362,668.80/x
  3. Step 3: Cross multiply
    664,472.64x = 916,959.04 × 362,668.80
  4. Step 4: Simplify right side
    664,472.64x = 332,552,434,685.95
  5. Step 5: Solve for x
    x = 332,552,434,685.95/664,472.64
  6. Step 6: Final answer
    x = 500,475.74

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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.