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Finding the Fourth Proportional to 16,838.58, 25,258.86 and 6,978.60

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Solution

The fourth proportional to 16,838.58, 25,258.86 and 6,978.60 is: 10,468.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,838.58 : 25,258.86 = 6,978.60 : x
  2. Step 2: Convert to fraction form
    16,838.58/25,258.86 = 6,978.60/x
  3. Step 3: Cross multiply
    16,838.58x = 25,258.86 × 6,978.60
  4. Step 4: Simplify right side
    16,838.58x = 176,271,480.40
  5. Step 5: Solve for x
    x = 176,271,480.40/16,838.58
  6. Step 6: Final answer
    x = 10,468.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.