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Finding the Fourth Proportional to 189,626.60, 261,685.60 and 103,586.76

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Solution

The fourth proportional to 189,626.60, 261,685.60 and 103,586.76 is: 142,950.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,626.60 : 261,685.60 = 103,586.76 : x
  2. Step 2: Convert to fraction form
    189,626.60/261,685.60 = 103,586.76/x
  3. Step 3: Cross multiply
    189,626.60x = 261,685.60 × 103,586.76
  4. Step 4: Simplify right side
    189,626.60x = 27,107,163,442.66
  5. Step 5: Solve for x
    x = 27,107,163,442.66/189,626.60
  6. Step 6: Final answer
    x = 142,950.22

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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.