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Finding the Fourth Proportional to 35,641.49, 53,468.00 and 13,456.80

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Solution

The fourth proportional to 35,641.49, 53,468.00 and 13,456.80 is: 20,187.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,641.49 : 53,468.00 = 13,456.80 : x
  2. Step 2: Convert to fraction form
    35,641.49/53,468.00 = 13,456.80/x
  3. Step 3: Cross multiply
    35,641.49x = 53,468.00 × 13,456.80
  4. Step 4: Simplify right side
    35,641.49x = 719,508,165.58
  5. Step 5: Solve for x
    x = 719,508,165.58/35,641.49
  6. Step 6: Final answer
    x = 20,187.38

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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.