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Finding the Fourth Proportional to 543,681.36, 815,635.08 and 164,623.32

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Solution

The fourth proportional to 543,681.36, 815,635.08 and 164,623.32 is: 246,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,681.36 : 815,635.08 = 164,623.32 : x
  2. Step 2: Convert to fraction form
    543,681.36/815,635.08 = 164,623.32/x
  3. Step 3: Cross multiply
    543,681.36x = 815,635.08 × 164,623.32
  4. Step 4: Simplify right side
    543,681.36x = 134,272,554,778.07
  5. Step 5: Solve for x
    x = 134,272,554,778.07/543,681.36
  6. Step 6: Final answer
    x = 246,969.21

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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.