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Finding the Fourth Proportional to 189,607.68, 261,648 and 104,722.56

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Solution

The fourth proportional to 189,607.68, 261,648 and 104,722.56 is: 144,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,607.68 : 261,648 = 104,722.56 : x
  2. Step 2: Convert to fraction form
    189,607.68/261,648 = 104,722.56/x
  3. Step 3: Cross multiply
    189,607.68x = 261,648 × 104,722.56
  4. Step 4: Simplify right side
    189,607.68x = 27,400,448,378.88
  5. Step 5: Solve for x
    x = 27,400,448,378.88/189,607.68
  6. Step 6: Final answer
    x = 144,511.28

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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.