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Finding the Fourth Proportional to 659,889.32, 911,059.99 and 453,513.20

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Solution

The fourth proportional to 659,889.32, 911,059.99 and 453,513.20 is: 626,131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,889.32 : 911,059.99 = 453,513.20 : x
  2. Step 2: Convert to fraction form
    659,889.32/911,059.99 = 453,513.20/x
  3. Step 3: Cross multiply
    659,889.32x = 911,059.99 × 453,513.20
  4. Step 4: Simplify right side
    659,889.32x = 413,177,725,767.79
  5. Step 5: Solve for x
    x = 413,177,725,767.79/659,889.32
  6. Step 6: Final answer
    x = 626,131.86

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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.