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Finding the Fourth Proportional to 62,623.87, 86,420.28 and 34,329.40

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Solution

The fourth proportional to 62,623.87, 86,420.28 and 34,329.40 is: 47,374.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,623.87 : 86,420.28 = 34,329.40 : x
  2. Step 2: Convert to fraction form
    62,623.87/86,420.28 = 34,329.40/x
  3. Step 3: Cross multiply
    62,623.87x = 86,420.28 × 34,329.40
  4. Step 4: Simplify right side
    62,623.87x = 2,966,756,360.23
  5. Step 5: Solve for x
    x = 2,966,756,360.23/62,623.87
  6. Step 6: Final answer
    x = 47,374.21

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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.