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Finding the Fourth Proportional to 14,458.70, 19,953.42 and 8,085.12

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Solution

The fourth proportional to 14,458.70, 19,953.42 and 8,085.12 is: 11,157.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.70 : 19,953.42 = 8,085.12 : x
  2. Step 2: Convert to fraction form
    14,458.70/19,953.42 = 8,085.12/x
  3. Step 3: Cross multiply
    14,458.70x = 19,953.42 × 8,085.12
  4. Step 4: Simplify right side
    14,458.70x = 161,325,795.11
  5. Step 5: Solve for x
    x = 161,325,795.11/14,458.70
  6. Step 6: Final answer
    x = 11,157.70

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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.