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Finding the Fourth Proportional to 353,133.26, 487,329.21 and 191,987.94

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Solution

The fourth proportional to 353,133.26, 487,329.21 and 191,987.94 is: 264,946.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,133.26 : 487,329.21 = 191,987.94 : x
  2. Step 2: Convert to fraction form
    353,133.26/487,329.21 = 191,987.94/x
  3. Step 3: Cross multiply
    353,133.26x = 487,329.21 × 191,987.94
  4. Step 4: Simplify right side
    353,133.26x = 93,561,330,169.79
  5. Step 5: Solve for x
    x = 93,561,330,169.79/353,133.26
  6. Step 6: Final answer
    x = 264,946.25

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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.