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Finding the Fourth Proportional to 21,594.84, 29,800.60 and 12,646.99

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Solution

The fourth proportional to 21,594.84, 29,800.60 and 12,646.99 is: 17,452.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,594.84 : 29,800.60 = 12,646.99 : x
  2. Step 2: Convert to fraction form
    21,594.84/29,800.60 = 12,646.99/x
  3. Step 3: Cross multiply
    21,594.84x = 29,800.60 × 12,646.99
  4. Step 4: Simplify right side
    21,594.84x = 376,887,890.19
  5. Step 5: Solve for x
    x = 376,887,890.19/21,594.84
  6. Step 6: Final answer
    x = 17,452.68

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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.