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Finding the Fourth Proportional to 62,666.40, 86,522.40 and 43,809.60

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Solution

The fourth proportional to 62,666.40, 86,522.40 and 43,809.60 is: 60,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,666.40 : 86,522.40 = 43,809.60 : x
  2. Step 2: Convert to fraction form
    62,666.40/86,522.40 = 43,809.60/x
  3. Step 3: Cross multiply
    62,666.40x = 86,522.40 × 43,809.60
  4. Step 4: Simplify right side
    62,666.40x = 3,790,511,735.04
  5. Step 5: Solve for x
    x = 3,790,511,735.04/62,666.40
  6. Step 6: Final answer
    x = 60,487.15

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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.