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Finding the Fourth Proportional to 21,836.70, 32,706.45 and 17,948.70

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Solution

The fourth proportional to 21,836.70, 32,706.45 and 17,948.70 is: 26,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.70 : 32,706.45 = 17,948.70 : x
  2. Step 2: Convert to fraction form
    21,836.70/32,706.45 = 17,948.70/x
  3. Step 3: Cross multiply
    21,836.70x = 32,706.45 × 17,948.70
  4. Step 4: Simplify right side
    21,836.70x = 587,038,259.12
  5. Step 5: Solve for x
    x = 587,038,259.12/21,836.70
  6. Step 6: Final answer
    x = 26,883.10

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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.