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Finding the Fourth Proportional to 155,809.81, 233,754 and 43,489.90

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Solution

The fourth proportional to 155,809.81, 233,754 and 43,489.90 is: 65,245.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,809.81 : 233,754 = 43,489.90 : x
  2. Step 2: Convert to fraction form
    155,809.81/233,754 = 43,489.90/x
  3. Step 3: Cross multiply
    155,809.81x = 233,754 × 43,489.90
  4. Step 4: Simplify right side
    155,809.81x = 10,165,938,084.60
  5. Step 5: Solve for x
    x = 10,165,938,084.60/155,809.81
  6. Step 6: Final answer
    x = 65,245.82

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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.