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Finding the Fourth Proportional to 18,683.59, 25,783.19 and 10,300.09

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Solution

The fourth proportional to 18,683.59, 25,783.19 and 10,300.09 is: 14,214.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.59 : 25,783.19 = 10,300.09 : x
  2. Step 2: Convert to fraction form
    18,683.59/25,783.19 = 10,300.09/x
  3. Step 3: Cross multiply
    18,683.59x = 25,783.19 × 10,300.09
  4. Step 4: Simplify right side
    18,683.59x = 265,569,125.99
  5. Step 5: Solve for x
    x = 265,569,125.99/18,683.59
  6. Step 6: Final answer
    x = 14,214.03

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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.