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Finding the Fourth Proportional to 655,668.92, 904,726.86 and 369,131.96

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Solution

The fourth proportional to 655,668.92, 904,726.86 and 369,131.96 is: 509,347.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,668.92 : 904,726.86 = 369,131.96 : x
  2. Step 2: Convert to fraction form
    655,668.92/904,726.86 = 369,131.96/x
  3. Step 3: Cross multiply
    655,668.92x = 904,726.86 × 369,131.96
  4. Step 4: Simplify right side
    655,668.92x = 333,963,599,096.45
  5. Step 5: Solve for x
    x = 333,963,599,096.45/655,668.92
  6. Step 6: Final answer
    x = 509,347.92

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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.