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Finding the Fourth Proportional to 15,594.75, 21,521.04 and 8,521.02

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Solution

The fourth proportional to 15,594.75, 21,521.04 and 8,521.02 is: 11,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,594.75 : 21,521.04 = 8,521.02 : x
  2. Step 2: Convert to fraction form
    15,594.75/21,521.04 = 8,521.02/x
  3. Step 3: Cross multiply
    15,594.75x = 21,521.04 × 8,521.02
  4. Step 4: Simplify right side
    15,594.75x = 183,381,212.26
  5. Step 5: Solve for x
    x = 183,381,212.26/15,594.75
  6. Step 6: Final answer
    x = 11,759.16

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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.