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Finding the Fourth Proportional to 13,607.37, 20,423.37 and 7,038.18

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Solution

The fourth proportional to 13,607.37, 20,423.37 and 7,038.18 is: 10,563.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.37 : 20,423.37 = 7,038.18 : x
  2. Step 2: Convert to fraction form
    13,607.37/20,423.37 = 7,038.18/x
  3. Step 3: Cross multiply
    13,607.37x = 20,423.37 × 7,038.18
  4. Step 4: Simplify right side
    13,607.37x = 143,743,354.27
  5. Step 5: Solve for x
    x = 143,743,354.27/13,607.37
  6. Step 6: Final answer
    x = 10,563.64

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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.