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Finding the Fourth Proportional to 14,585.70, 21,878.55 and 12,404.10

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Solution

The fourth proportional to 14,585.70, 21,878.55 and 12,404.10 is: 18,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,585.70 : 21,878.55 = 12,404.10 : x
  2. Step 2: Convert to fraction form
    14,585.70/21,878.55 = 12,404.10/x
  3. Step 3: Cross multiply
    14,585.70x = 21,878.55 × 12,404.10
  4. Step 4: Simplify right side
    14,585.70x = 271,383,722.06
  5. Step 5: Solve for x
    x = 271,383,722.06/14,585.70
  6. Step 6: Final answer
    x = 18,606.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.