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Finding the Fourth Proportional to 13,433.76, 18,539.16 and 7,465.98

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Solution

The fourth proportional to 13,433.76, 18,539.16 and 7,465.98 is: 10,303.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.76 : 18,539.16 = 7,465.98 : x
  2. Step 2: Convert to fraction form
    13,433.76/18,539.16 = 7,465.98/x
  3. Step 3: Cross multiply
    13,433.76x = 18,539.16 × 7,465.98
  4. Step 4: Simplify right side
    13,433.76x = 138,412,997.78
  5. Step 5: Solve for x
    x = 138,412,997.78/13,433.76
  6. Step 6: Final answer
    x = 10,303.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.