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Finding the Fourth Proportional to 704,604.88, 1,056,903.60 and 172,128.88

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Solution

The fourth proportional to 704,604.88, 1,056,903.60 and 172,128.88 is: 258,192.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,604.88 : 1,056,903.60 = 172,128.88 : x
  2. Step 2: Convert to fraction form
    704,604.88/1,056,903.60 = 172,128.88/x
  3. Step 3: Cross multiply
    704,604.88x = 1,056,903.60 × 172,128.88
  4. Step 4: Simplify right side
    704,604.88x = 181,923,632,935.97
  5. Step 5: Solve for x
    x = 181,923,632,935.97/704,604.88
  6. Step 6: Final answer
    x = 258,192.41

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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.