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Finding the Fourth Proportional to 189,085.83, 260,938.49 and 103,044.84

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Solution

The fourth proportional to 189,085.83, 260,938.49 and 103,044.84 is: 142,201.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,085.83 : 260,938.49 = 103,044.84 : x
  2. Step 2: Convert to fraction form
    189,085.83/260,938.49 = 103,044.84/x
  3. Step 3: Cross multiply
    189,085.83x = 260,938.49 × 103,044.84
  4. Step 4: Simplify right side
    189,085.83x = 26,888,363,647.20
  5. Step 5: Solve for x
    x = 26,888,363,647.20/189,085.83
  6. Step 6: Final answer
    x = 142,201.90

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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.