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Finding the Fourth Proportional to 18,411.46, 25,377.46 and 13,026.94

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Solution

The fourth proportional to 18,411.46, 25,377.46 and 13,026.94 is: 17,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.46 : 25,377.46 = 13,026.94 : x
  2. Step 2: Convert to fraction form
    18,411.46/25,377.46 = 13,026.94/x
  3. Step 3: Cross multiply
    18,411.46x = 25,377.46 × 13,026.94
  4. Step 4: Simplify right side
    18,411.46x = 330,590,648.77
  5. Step 5: Solve for x
    x = 330,590,648.77/18,411.46
  6. Step 6: Final answer
    x = 17,955.70

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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.