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Finding the Fourth Proportional to 115,589.90, 173,409.15 and 65,629.10

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Solution

The fourth proportional to 115,589.90, 173,409.15 and 65,629.10 is: 98,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,589.90 : 173,409.15 = 65,629.10 : x
  2. Step 2: Convert to fraction form
    115,589.90/173,409.15 = 65,629.10/x
  3. Step 3: Cross multiply
    115,589.90x = 173,409.15 × 65,629.10
  4. Step 4: Simplify right side
    115,589.90x = 11,380,686,446.27
  5. Step 5: Solve for x
    x = 11,380,686,446.27/115,589.90
  6. Step 6: Final answer
    x = 98,457.45

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1.5x scale

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.