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Finding the Fourth Proportional to 12,465.55, 17,275.23 and 12,228.99

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Solution

The fourth proportional to 12,465.55, 17,275.23 and 12,228.99 is: 16,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.55 : 17,275.23 = 12,228.99 : x
  2. Step 2: Convert to fraction form
    12,465.55/17,275.23 = 12,228.99/x
  3. Step 3: Cross multiply
    12,465.55x = 17,275.23 × 12,228.99
  4. Step 4: Simplify right side
    12,465.55x = 211,258,630.11
  5. Step 5: Solve for x
    x = 211,258,630.11/12,465.55
  6. Step 6: Final answer
    x = 16,947.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.