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Finding the Fourth Proportional to 571,006.99, 856,511.11 and 171,647.72

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Solution

The fourth proportional to 571,006.99, 856,511.11 and 171,647.72 is: 257,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,006.99 : 856,511.11 = 171,647.72 : x
  2. Step 2: Convert to fraction form
    571,006.99/856,511.11 = 171,647.72/x
  3. Step 3: Cross multiply
    571,006.99x = 856,511.11 × 171,647.72
  4. Step 4: Simplify right side
    571,006.99x = 147,018,179,186.17
  5. Step 5: Solve for x
    x = 147,018,179,186.17/571,006.99
  6. Step 6: Final answer
    x = 257,471.77

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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.