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Finding the Fourth Proportional to 54,679.50, 74,965.59 and 53,683.05

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Solution

The fourth proportional to 54,679.50, 74,965.59 and 53,683.05 is: 73,599.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,679.50 : 74,965.59 = 53,683.05 : x
  2. Step 2: Convert to fraction form
    54,679.50/74,965.59 = 53,683.05/x
  3. Step 3: Cross multiply
    54,679.50x = 74,965.59 × 53,683.05
  4. Step 4: Simplify right side
    54,679.50x = 4,024,381,516.25
  5. Step 5: Solve for x
    x = 4,024,381,516.25/54,679.50
  6. Step 6: Final answer
    x = 73,599.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.