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Finding the Fourth Proportional to 58,992.12, 81,344.52 and 53,393.40

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Solution

The fourth proportional to 58,992.12, 81,344.52 and 53,393.40 is: 73,624.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,992.12 : 81,344.52 = 53,393.40 : x
  2. Step 2: Convert to fraction form
    58,992.12/81,344.52 = 53,393.40/x
  3. Step 3: Cross multiply
    58,992.12x = 81,344.52 × 53,393.40
  4. Step 4: Simplify right side
    58,992.12x = 4,343,260,494.17
  5. Step 5: Solve for x
    x = 4,343,260,494.17/58,992.12
  6. Step 6: Final answer
    x = 73,624.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.