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Finding the Fourth Proportional to 58,390.52, 80,579 and 33,240

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Solution

The fourth proportional to 58,390.52, 80,579 and 33,240 is: 45,871.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,390.52 : 80,579 = 33,240 : x
  2. Step 2: Convert to fraction form
    58,390.52/80,579 = 33,240/x
  3. Step 3: Cross multiply
    58,390.52x = 80,579 × 33,240
  4. Step 4: Simplify right side
    58,390.52x = 2,678,445,960
  5. Step 5: Solve for x
    x = 2,678,445,960/58,390.52
  6. Step 6: Final answer
    x = 45,871.25

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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.