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Finding the Fourth Proportional to 16,970.40, 25,455.60 and 4,658.40

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Solution

The fourth proportional to 16,970.40, 25,455.60 and 4,658.40 is: 6,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,970.40 : 25,455.60 = 4,658.40 : x
  2. Step 2: Convert to fraction form
    16,970.40/25,455.60 = 4,658.40/x
  3. Step 3: Cross multiply
    16,970.40x = 25,455.60 × 4,658.40
  4. Step 4: Simplify right side
    16,970.40x = 118,582,367.04
  5. Step 5: Solve for x
    x = 118,582,367.04/16,970.40
  6. Step 6: Final answer
    x = 6,987.60

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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.