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Finding the Fourth Proportional to 18,589.95, 25,653.70 and 10,631.70

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Solution

The fourth proportional to 18,589.95, 25,653.70 and 10,631.70 is: 14,671.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.95 : 25,653.70 = 10,631.70 : x
  2. Step 2: Convert to fraction form
    18,589.95/25,653.70 = 10,631.70/x
  3. Step 3: Cross multiply
    18,589.95x = 25,653.70 × 10,631.70
  4. Step 4: Simplify right side
    18,589.95x = 272,742,442.29
  5. Step 5: Solve for x
    x = 272,742,442.29/18,589.95
  6. Step 6: Final answer
    x = 14,671.50

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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.