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Finding the Fourth Proportional to 8,955.80, 12,358.44 and 4,976.68

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Solution

The fourth proportional to 8,955.80, 12,358.44 and 4,976.68 is: 6,867.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.80 : 12,358.44 = 4,976.68 : x
  2. Step 2: Convert to fraction form
    8,955.80/12,358.44 = 4,976.68/x
  3. Step 3: Cross multiply
    8,955.80x = 12,358.44 × 4,976.68
  4. Step 4: Simplify right side
    8,955.80x = 61,503,914.50
  5. Step 5: Solve for x
    x = 61,503,914.50/8,955.80
  6. Step 6: Final answer
    x = 6,867.50

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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.