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Finding the Fourth Proportional to 18,790.84, 25,931.34 and 10,407.34

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Solution

The fourth proportional to 18,790.84, 25,931.34 and 10,407.34 is: 14,362.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.84 : 25,931.34 = 10,407.34 : x
  2. Step 2: Convert to fraction form
    18,790.84/25,931.34 = 10,407.34/x
  3. Step 3: Cross multiply
    18,790.84x = 25,931.34 × 10,407.34
  4. Step 4: Simplify right side
    18,790.84x = 269,876,272.04
  5. Step 5: Solve for x
    x = 269,876,272.04/18,790.84
  6. Step 6: Final answer
    x = 14,362.12

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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.