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Finding the Fourth Proportional to 18,322.71, 25,285.44 and 10,364.77

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Solution

The fourth proportional to 18,322.71, 25,285.44 and 10,364.77 is: 14,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.71 : 25,285.44 = 10,364.77 : x
  2. Step 2: Convert to fraction form
    18,322.71/25,285.44 = 10,364.77/x
  3. Step 3: Cross multiply
    18,322.71x = 25,285.44 × 10,364.77
  4. Step 4: Simplify right side
    18,322.71x = 262,077,740.16
  5. Step 5: Solve for x
    x = 262,077,740.16/18,322.71
  6. Step 6: Final answer
    x = 14,303.43

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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.