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Finding the Fourth Proportional to 58,580.74, 87,852.94 and 21,135.95

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Solution

The fourth proportional to 58,580.74, 87,852.94 and 21,135.95 is: 31,697.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,580.74 : 87,852.94 = 21,135.95 : x
  2. Step 2: Convert to fraction form
    58,580.74/87,852.94 = 21,135.95/x
  3. Step 3: Cross multiply
    58,580.74x = 87,852.94 × 21,135.95
  4. Step 4: Simplify right side
    58,580.74x = 1,856,855,347.19
  5. Step 5: Solve for x
    x = 1,856,855,347.19/58,580.74
  6. Step 6: Final answer
    x = 31,697.37

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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.