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Finding the Fourth Proportional to 18,430.84, 25,231.07 and 18,299.08

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Solution

The fourth proportional to 18,430.84, 25,231.07 and 18,299.08 is: 25,050.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.84 : 25,231.07 = 18,299.08 : x
  2. Step 2: Convert to fraction form
    18,430.84/25,231.07 = 18,299.08/x
  3. Step 3: Cross multiply
    18,430.84x = 25,231.07 × 18,299.08
  4. Step 4: Simplify right side
    18,430.84x = 461,705,368.42
  5. Step 5: Solve for x
    x = 461,705,368.42/18,430.84
  6. Step 6: Final answer
    x = 25,050.70

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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.