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Finding the Fourth Proportional to 8,674.49, 11,970.69 and 4,695.51

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Solution

The fourth proportional to 8,674.49, 11,970.69 and 4,695.51 is: 6,479.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.49 : 11,970.69 = 4,695.51 : x
  2. Step 2: Convert to fraction form
    8,674.49/11,970.69 = 4,695.51/x
  3. Step 3: Cross multiply
    8,674.49x = 11,970.69 × 4,695.51
  4. Step 4: Simplify right side
    8,674.49x = 56,208,494.60
  5. Step 5: Solve for x
    x = 56,208,494.60/8,674.49
  6. Step 6: Final answer
    x = 6,479.75

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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.