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Finding the Fourth Proportional to 58,457.39, 87,664.43 and 21,007.37

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Solution

The fourth proportional to 58,457.39, 87,664.43 and 21,007.37 is: 31,503.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,457.39 : 87,664.43 = 21,007.37 : x
  2. Step 2: Convert to fraction form
    58,457.39/87,664.43 = 21,007.37/x
  3. Step 3: Cross multiply
    58,457.39x = 87,664.43 × 21,007.37
  4. Step 4: Simplify right side
    58,457.39x = 1,841,598,573.49
  5. Step 5: Solve for x
    x = 1,841,598,573.49/58,457.39
  6. Step 6: Final answer
    x = 31,503.27

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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.