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Finding the Fourth Proportional to 58,569.75, 87,801.17 and 21,099.15

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Solution

The fourth proportional to 58,569.75, 87,801.17 and 21,099.15 is: 31,629.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,569.75 : 87,801.17 = 21,099.15 : x
  2. Step 2: Convert to fraction form
    58,569.75/87,801.17 = 21,099.15/x
  3. Step 3: Cross multiply
    58,569.75x = 87,801.17 × 21,099.15
  4. Step 4: Simplify right side
    58,569.75x = 1,852,529,950.51
  5. Step 5: Solve for x
    x = 1,852,529,950.51/58,569.75
  6. Step 6: Final answer
    x = 31,629.47

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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.