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Finding the Fourth Proportional to 189,776.80, 261,888.24 and 104,897.44

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Solution

The fourth proportional to 189,776.80, 261,888.24 and 104,897.44 is: 144,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,776.80 : 261,888.24 = 104,897.44 : x
  2. Step 2: Convert to fraction form
    189,776.80/261,888.24 = 104,897.44/x
  3. Step 3: Cross multiply
    189,776.80x = 261,888.24 × 104,897.44
  4. Step 4: Simplify right side
    189,776.80x = 27,471,405,942.11
  5. Step 5: Solve for x
    x = 27,471,405,942.11/189,776.80
  6. Step 6: Final answer
    x = 144,756.40

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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.