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Finding the Fourth Proportional to 18,857.63, 26,020.63 and 10,898.31

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Solution

The fourth proportional to 18,857.63, 26,020.63 and 10,898.31 is: 15,037.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.63 : 26,020.63 = 10,898.31 : x
  2. Step 2: Convert to fraction form
    18,857.63/26,020.63 = 10,898.31/x
  3. Step 3: Cross multiply
    18,857.63x = 26,020.63 × 10,898.31
  4. Step 4: Simplify right side
    18,857.63x = 283,580,864.89
  5. Step 5: Solve for x
    x = 283,580,864.89/18,857.63
  6. Step 6: Final answer
    x = 15,037.99

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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.