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Finding the Fourth Proportional to 189,061.54, 260,917.57 and 104,178.60

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Solution

The fourth proportional to 189,061.54, 260,917.57 and 104,178.60 is: 143,773.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,061.54 : 260,917.57 = 104,178.60 : x
  2. Step 2: Convert to fraction form
    189,061.54/260,917.57 = 104,178.60/x
  3. Step 3: Cross multiply
    189,061.54x = 260,917.57 × 104,178.60
  4. Step 4: Simplify right side
    189,061.54x = 27,182,027,158.00
  5. Step 5: Solve for x
    x = 27,182,027,158.00/189,061.54
  6. Step 6: Final answer
    x = 143,773.44

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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.