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Finding the Fourth Proportional to 415,647.01, 623,418.68 and 166,331.17

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Solution

The fourth proportional to 415,647.01, 623,418.68 and 166,331.17 is: 249,476.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,647.01 : 623,418.68 = 166,331.17 : x
  2. Step 2: Convert to fraction form
    415,647.01/623,418.68 = 166,331.17/x
  3. Step 3: Cross multiply
    415,647.01x = 623,418.68 × 166,331.17
  4. Step 4: Simplify right side
    415,647.01x = 103,693,957,612.60
  5. Step 5: Solve for x
    x = 103,693,957,612.60/415,647.01
  6. Step 6: Final answer
    x = 249,476.01

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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.