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Finding the Fourth Proportional to 189,813.06, 261,930.78 and 104,925.06

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Solution

The fourth proportional to 189,813.06, 261,930.78 and 104,925.06 is: 144,790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,813.06 : 261,930.78 = 104,925.06 : x
  2. Step 2: Convert to fraction form
    189,813.06/261,930.78 = 104,925.06/x
  3. Step 3: Cross multiply
    189,813.06x = 261,930.78 × 104,925.06
  4. Step 4: Simplify right side
    189,813.06x = 27,483,102,807.35
  5. Step 5: Solve for x
    x = 27,483,102,807.35/189,813.06
  6. Step 6: Final answer
    x = 144,790.37

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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.