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Finding the Fourth Proportional to 18,136.63, 25,030.38 and 10,178.38

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Solution

The fourth proportional to 18,136.63, 25,030.38 and 10,178.38 is: 14,047.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.63 : 25,030.38 = 10,178.38 : x
  2. Step 2: Convert to fraction form
    18,136.63/25,030.38 = 10,178.38/x
  3. Step 3: Cross multiply
    18,136.63x = 25,030.38 × 10,178.38
  4. Step 4: Simplify right side
    18,136.63x = 254,768,719.18
  5. Step 5: Solve for x
    x = 254,768,719.18/18,136.63
  6. Step 6: Final answer
    x = 14,047.19

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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.