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Finding the Fourth Proportional to 13,655.52, 20,483.11 and 7,455.04

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Solution

The fourth proportional to 13,655.52, 20,483.11 and 7,455.04 is: 11,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.52 : 20,483.11 = 7,455.04 : x
  2. Step 2: Convert to fraction form
    13,655.52/20,483.11 = 7,455.04/x
  3. Step 3: Cross multiply
    13,655.52x = 20,483.11 × 7,455.04
  4. Step 4: Simplify right side
    13,655.52x = 152,702,404.37
  5. Step 5: Solve for x
    x = 152,702,404.37/13,655.52
  6. Step 6: Final answer
    x = 11,182.47

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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.