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Finding the Fourth Proportional to 22,673.99, 31,289.87 and 12,982.16

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Solution

The fourth proportional to 22,673.99, 31,289.87 and 12,982.16 is: 17,915.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,673.99 : 31,289.87 = 12,982.16 : x
  2. Step 2: Convert to fraction form
    22,673.99/31,289.87 = 12,982.16/x
  3. Step 3: Cross multiply
    22,673.99x = 31,289.87 × 12,982.16
  4. Step 4: Simplify right side
    22,673.99x = 406,209,877.36
  5. Step 5: Solve for x
    x = 406,209,877.36/22,673.99
  6. Step 6: Final answer
    x = 17,915.24

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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.