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Finding the Fourth Proportional to 62,838.90, 86,683.06 and 39,826.62

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Solution

The fourth proportional to 62,838.90, 86,683.06 and 39,826.62 is: 54,938.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,838.90 : 86,683.06 = 39,826.62 : x
  2. Step 2: Convert to fraction form
    62,838.90/86,683.06 = 39,826.62/x
  3. Step 3: Cross multiply
    62,838.90x = 86,683.06 × 39,826.62
  4. Step 4: Simplify right side
    62,838.90x = 3,452,293,291.06
  5. Step 5: Solve for x
    x = 3,452,293,291.06/62,838.90
  6. Step 6: Final answer
    x = 54,938.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.