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Finding the Fourth Proportional to 18,605.40, 27,916.35 and 7,533.71

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Solution

The fourth proportional to 18,605.40, 27,916.35 and 7,533.71 is: 11,303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.40 : 27,916.35 = 7,533.71 : x
  2. Step 2: Convert to fraction form
    18,605.40/27,916.35 = 7,533.71/x
  3. Step 3: Cross multiply
    18,605.40x = 27,916.35 × 7,533.71
  4. Step 4: Simplify right side
    18,605.40x = 210,313,622.01
  5. Step 5: Solve for x
    x = 210,313,622.01/18,605.40
  6. Step 6: Final answer
    x = 11,303.90

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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.