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Finding the Fourth Proportional to 14,992.32, 20,696.40 and 8,703.48

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Solution

The fourth proportional to 14,992.32, 20,696.40 and 8,703.48 is: 12,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.32 : 20,696.40 = 8,703.48 : x
  2. Step 2: Convert to fraction form
    14,992.32/20,696.40 = 8,703.48/x
  3. Step 3: Cross multiply
    14,992.32x = 20,696.40 × 8,703.48
  4. Step 4: Simplify right side
    14,992.32x = 180,130,703.47
  5. Step 5: Solve for x
    x = 180,130,703.47/14,992.32
  6. Step 6: Final answer
    x = 12,014.87

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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.