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Finding the Fourth Proportional to 621,907.27, 932,866.13 and 172,663.17

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Solution

The fourth proportional to 621,907.27, 932,866.13 and 172,663.17 is: 258,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,907.27 : 932,866.13 = 172,663.17 : x
  2. Step 2: Convert to fraction form
    621,907.27/932,866.13 = 172,663.17/x
  3. Step 3: Cross multiply
    621,907.27x = 932,866.13 × 172,663.17
  4. Step 4: Simplify right side
    621,907.27x = 161,071,622,328.12
  5. Step 5: Solve for x
    x = 161,071,622,328.12/621,907.27
  6. Step 6: Final answer
    x = 258,996.20

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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.