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Finding the Fourth Proportional to 404,687.61, 607,021.56 and 105,167.16

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Solution

The fourth proportional to 404,687.61, 607,021.56 and 105,167.16 is: 157,748.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,687.61 : 607,021.56 = 105,167.16 : x
  2. Step 2: Convert to fraction form
    404,687.61/607,021.56 = 105,167.16/x
  3. Step 3: Cross multiply
    404,687.61x = 607,021.56 × 105,167.16
  4. Step 4: Simplify right side
    404,687.61x = 63,838,733,523.97
  5. Step 5: Solve for x
    x = 63,838,733,523.97/404,687.61
  6. Step 6: Final answer
    x = 157,748.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.