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Finding the Fourth Proportional to 189,511.81, 261,525.57 and 104,628.25

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Solution

The fourth proportional to 189,511.81, 261,525.57 and 104,628.25 is: 144,386.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,511.81 : 261,525.57 = 104,628.25 : x
  2. Step 2: Convert to fraction form
    189,511.81/261,525.57 = 104,628.25/x
  3. Step 3: Cross multiply
    189,511.81x = 261,525.57 × 104,628.25
  4. Step 4: Simplify right side
    189,511.81x = 27,362,962,719.35
  5. Step 5: Solve for x
    x = 27,362,962,719.35/189,511.81
  6. Step 6: Final answer
    x = 144,386.58

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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.