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Finding the Fourth Proportional to 640,329.01, 883,653.74 and 353,846.59

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Solution

The fourth proportional to 640,329.01, 883,653.74 and 353,846.59 is: 488,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,329.01 : 883,653.74 = 353,846.59 : x
  2. Step 2: Convert to fraction form
    640,329.01/883,653.74 = 353,846.59/x
  3. Step 3: Cross multiply
    640,329.01x = 883,653.74 × 353,846.59
  4. Step 4: Simplify right side
    640,329.01x = 312,677,859,988.30
  5. Step 5: Solve for x
    x = 312,677,859,988.30/640,329.01
  6. Step 6: Final answer
    x = 488,308.13

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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.