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Finding the Fourth Proportional to 18,534.80, 27,802.20 and 4,683.80

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Solution

The fourth proportional to 18,534.80, 27,802.20 and 4,683.80 is: 7,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,534.80 : 27,802.20 = 4,683.80 : x
  2. Step 2: Convert to fraction form
    18,534.80/27,802.20 = 4,683.80/x
  3. Step 3: Cross multiply
    18,534.80x = 27,802.20 × 4,683.80
  4. Step 4: Simplify right side
    18,534.80x = 130,219,944.36
  5. Step 5: Solve for x
    x = 130,219,944.36/18,534.80
  6. Step 6: Final answer
    x = 7,025.70

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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.