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Finding the Fourth Proportional to 15,646.99, 21,592.90 and 8,476.98

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Solution

The fourth proportional to 15,646.99, 21,592.90 and 8,476.98 is: 11,698.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646.99 : 21,592.90 = 8,476.98 : x
  2. Step 2: Convert to fraction form
    15,646.99/21,592.90 = 8,476.98/x
  3. Step 3: Cross multiply
    15,646.99x = 21,592.90 × 8,476.98
  4. Step 4: Simplify right side
    15,646.99x = 183,042,581.44
  5. Step 5: Solve for x
    x = 183,042,581.44/15,646.99
  6. Step 6: Final answer
    x = 11,698.26

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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.