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Finding the Fourth Proportional to 13,471.76, 18,598.74 and 9,003.08

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Solution

The fourth proportional to 13,471.76, 18,598.74 and 9,003.08 is: 12,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471.76 : 18,598.74 = 9,003.08 : x
  2. Step 2: Convert to fraction form
    13,471.76/18,598.74 = 9,003.08/x
  3. Step 3: Cross multiply
    13,471.76x = 18,598.74 × 9,003.08
  4. Step 4: Simplify right side
    13,471.76x = 167,445,944.12
  5. Step 5: Solve for x
    x = 167,445,944.12/13,471.76
  6. Step 6: Final answer
    x = 12,429.40

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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.