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Finding the Fourth Proportional to 216,699.63, 325,063.72 and 56,779.49

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Solution

The fourth proportional to 216,699.63, 325,063.72 and 56,779.49 is: 85,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,699.63 : 325,063.72 = 56,779.49 : x
  2. Step 2: Convert to fraction form
    216,699.63/325,063.72 = 56,779.49/x
  3. Step 3: Cross multiply
    216,699.63x = 325,063.72 × 56,779.49
  4. Step 4: Simplify right side
    216,699.63x = 18,456,950,613.78
  5. Step 5: Solve for x
    x = 18,456,950,613.78/216,699.63
  6. Step 6: Final answer
    x = 85,172.97

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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.