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Finding the Fourth Proportional to 58,371.58, 87,551.89 and 18,929.03

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Solution

The fourth proportional to 58,371.58, 87,551.89 and 18,929.03 is: 28,391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,371.58 : 87,551.89 = 18,929.03 : x
  2. Step 2: Convert to fraction form
    58,371.58/87,551.89 = 18,929.03/x
  3. Step 3: Cross multiply
    58,371.58x = 87,551.89 × 18,929.03
  4. Step 4: Simplify right side
    58,371.58x = 1,657,272,352.37
  5. Step 5: Solve for x
    x = 1,657,272,352.37/58,371.58
  6. Step 6: Final answer
    x = 28,391.77

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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.