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Finding the Fourth Proportional to 621,070.54, 931,553.86 and 171,796.94

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Solution

The fourth proportional to 621,070.54, 931,553.86 and 171,796.94 is: 257,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,070.54 : 931,553.86 = 171,796.94 : x
  2. Step 2: Convert to fraction form
    621,070.54/931,553.86 = 171,796.94/x
  3. Step 3: Cross multiply
    621,070.54x = 931,553.86 × 171,796.94
  4. Step 4: Simplify right side
    621,070.54x = 160,038,102,593.19
  5. Step 5: Solve for x
    x = 160,038,102,593.19/621,070.54
  6. Step 6: Final answer
    x = 257,681.04

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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.