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Finding the Fourth Proportional to 18,925.94, 25,928.66 and 18,216.52

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Solution

The fourth proportional to 18,925.94, 25,928.66 and 18,216.52 is: 24,956.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.94 : 25,928.66 = 18,216.52 : x
  2. Step 2: Convert to fraction form
    18,925.94/25,928.66 = 18,216.52/x
  3. Step 3: Cross multiply
    18,925.94x = 25,928.66 × 18,216.52
  4. Step 4: Simplify right side
    18,925.94x = 472,329,953.46
  5. Step 5: Solve for x
    x = 472,329,953.46/18,925.94
  6. Step 6: Final answer
    x = 24,956.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.