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Finding the Fourth Proportional to 53,805.99, 80,825.76 and 45,502.68

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Solution

The fourth proportional to 53,805.99, 80,825.76 and 45,502.68 is: 68,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,805.99 : 80,825.76 = 45,502.68 : x
  2. Step 2: Convert to fraction form
    53,805.99/80,825.76 = 45,502.68/x
  3. Step 3: Cross multiply
    53,805.99x = 80,825.76 × 45,502.68
  4. Step 4: Simplify right side
    53,805.99x = 3,677,788,693.04
  5. Step 5: Solve for x
    x = 3,677,788,693.04/53,805.99
  6. Step 6: Final answer
    x = 68,352.77

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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.