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Finding the Fourth Proportional to 325,614.80, 489,005.40 and 236,968.40

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Solution

The fourth proportional to 325,614.80, 489,005.40 and 236,968.40 is: 355,877.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,614.80 : 489,005.40 = 236,968.40 : x
  2. Step 2: Convert to fraction form
    325,614.80/489,005.40 = 236,968.40/x
  3. Step 3: Cross multiply
    325,614.80x = 489,005.40 × 236,968.40
  4. Step 4: Simplify right side
    325,614.80x = 115,878,827,229.36
  5. Step 5: Solve for x
    x = 115,878,827,229.36/325,614.80
  6. Step 6: Final answer
    x = 355,877.03

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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.