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Finding the Fourth Proportional to 35,762.69, 53,644.10 and 12,389.13

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Solution

The fourth proportional to 35,762.69, 53,644.10 and 12,389.13 is: 18,583.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,762.69 : 53,644.10 = 12,389.13 : x
  2. Step 2: Convert to fraction form
    35,762.69/53,644.10 = 12,389.13/x
  3. Step 3: Cross multiply
    35,762.69x = 53,644.10 × 12,389.13
  4. Step 4: Simplify right side
    35,762.69x = 664,603,666.69
  5. Step 5: Solve for x
    x = 664,603,666.69/35,762.69
  6. Step 6: Final answer
    x = 18,583.71

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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.