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Finding the Fourth Proportional to 15,982.90, 22,346.90 and 15,982.90

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Solution

The fourth proportional to 15,982.90, 22,346.90 and 15,982.90 is: 22,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,982.90 : 22,346.90 = 15,982.90 : x
  2. Step 2: Convert to fraction form
    15,982.90/22,346.90 = 15,982.90/x
  3. Step 3: Cross multiply
    15,982.90x = 22,346.90 × 15,982.90
  4. Step 4: Simplify right side
    15,982.90x = 357,168,268.01
  5. Step 5: Solve for x
    x = 357,168,268.01/15,982.90
  6. Step 6: Final answer
    x = 22,346.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.