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Finding the Fourth Proportional to 55,053.68, 76,363.86 and 53,165.57

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Solution

The fourth proportional to 55,053.68, 76,363.86 and 53,165.57 is: 73,744.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,053.68 : 76,363.86 = 53,165.57 : x
  2. Step 2: Convert to fraction form
    55,053.68/76,363.86 = 53,165.57/x
  3. Step 3: Cross multiply
    55,053.68x = 76,363.86 × 53,165.57
  4. Step 4: Simplify right side
    55,053.68x = 4,059,927,762.48
  5. Step 5: Solve for x
    x = 4,059,927,762.48/55,053.68
  6. Step 6: Final answer
    x = 73,744.90

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.