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Finding the Fourth Proportional to 76,617.46, 105,736.08 and 42,626.08

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Solution

The fourth proportional to 76,617.46, 105,736.08 and 42,626.08 is: 58,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,617.46 : 105,736.08 = 42,626.08 : x
  2. Step 2: Convert to fraction form
    76,617.46/105,736.08 = 42,626.08/x
  3. Step 3: Cross multiply
    76,617.46x = 105,736.08 × 42,626.08
  4. Step 4: Simplify right side
    76,617.46x = 4,507,114,604.97
  5. Step 5: Solve for x
    x = 4,507,114,604.97/76,617.46
  6. Step 6: Final answer
    x = 58,826.21

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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.