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Finding the Fourth Proportional to 15,648.66, 21,594.96 and 8,574.84

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Solution

The fourth proportional to 15,648.66, 21,594.96 and 8,574.84 is: 11,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648.66 : 21,594.96 = 8,574.84 : x
  2. Step 2: Convert to fraction form
    15,648.66/21,594.96 = 8,574.84/x
  3. Step 3: Cross multiply
    15,648.66x = 21,594.96 × 8,574.84
  4. Step 4: Simplify right side
    15,648.66x = 185,173,326.81
  5. Step 5: Solve for x
    x = 185,173,326.81/15,648.66
  6. Step 6: Final answer
    x = 11,833.17

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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.