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Finding the Fourth Proportional to 52,683.48, 78,969.78 and 36,039

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Solution

The fourth proportional to 52,683.48, 78,969.78 and 36,039 is: 54,020.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,683.48 : 78,969.78 = 36,039 : x
  2. Step 2: Convert to fraction form
    52,683.48/78,969.78 = 36,039/x
  3. Step 3: Cross multiply
    52,683.48x = 78,969.78 × 36,039
  4. Step 4: Simplify right side
    52,683.48x = 2,845,991,901.42
  5. Step 5: Solve for x
    x = 2,845,991,901.42/52,683.48
  6. Step 6: Final answer
    x = 54,020.58

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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.