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Finding the Fourth Proportional to 577,443.63, 866,155.89 and 172,636.77

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Solution

The fourth proportional to 577,443.63, 866,155.89 and 172,636.77 is: 258,952.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,443.63 : 866,155.89 = 172,636.77 : x
  2. Step 2: Convert to fraction form
    577,443.63/866,155.89 = 172,636.77/x
  3. Step 3: Cross multiply
    577,443.63x = 866,155.89 × 172,636.77
  4. Step 4: Simplify right side
    577,443.63x = 149,530,355,166.08
  5. Step 5: Solve for x
    x = 149,530,355,166.08/577,443.63
  6. Step 6: Final answer
    x = 258,952.30

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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.