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Finding the Fourth Proportional to 18,473.76, 25,503.12 and 14,431.68

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Solution

The fourth proportional to 18,473.76, 25,503.12 and 14,431.68 is: 19,923.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.76 : 25,503.12 = 14,431.68 : x
  2. Step 2: Convert to fraction form
    18,473.76/25,503.12 = 14,431.68/x
  3. Step 3: Cross multiply
    18,473.76x = 25,503.12 × 14,431.68
  4. Step 4: Simplify right side
    18,473.76x = 368,052,866.84
  5. Step 5: Solve for x
    x = 368,052,866.84/18,473.76
  6. Step 6: Final answer
    x = 19,923.01

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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.