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Finding the Fourth Proportional to 62,568.72, 93,833.64 and 21,006

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Solution

The fourth proportional to 62,568.72, 93,833.64 and 21,006 is: 31,502.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,568.72 : 93,833.64 = 21,006 : x
  2. Step 2: Convert to fraction form
    62,568.72/93,833.64 = 21,006/x
  3. Step 3: Cross multiply
    62,568.72x = 93,833.64 × 21,006
  4. Step 4: Simplify right side
    62,568.72x = 1,971,069,441.84
  5. Step 5: Solve for x
    x = 1,971,069,441.84/62,568.72
  6. Step 6: Final answer
    x = 31,502.47

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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.