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Finding the Fourth Proportional to 14,455.13, 19,944.03 and 9,078.15

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Solution

The fourth proportional to 14,455.13, 19,944.03 and 9,078.15 is: 12,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455.13 : 19,944.03 = 9,078.15 : x
  2. Step 2: Convert to fraction form
    14,455.13/19,944.03 = 9,078.15/x
  3. Step 3: Cross multiply
    14,455.13x = 19,944.03 × 9,078.15
  4. Step 4: Simplify right side
    14,455.13x = 181,054,895.94
  5. Step 5: Solve for x
    x = 181,054,895.94/14,455.13
  6. Step 6: Final answer
    x = 12,525.30

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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.