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Finding the Fourth Proportional to 126,775.95, 189,887.58 and 63,485.69

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Solution

The fourth proportional to 126,775.95, 189,887.58 and 63,485.69 is: 95,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,775.95 : 189,887.58 = 63,485.69 : x
  2. Step 2: Convert to fraction form
    126,775.95/189,887.58 = 63,485.69/x
  3. Step 3: Cross multiply
    126,775.95x = 189,887.58 × 63,485.69
  4. Step 4: Simplify right side
    126,775.95x = 12,055,143,089.29
  5. Step 5: Solve for x
    x = 12,055,143,089.29/126,775.95
  6. Step 6: Final answer
    x = 95,090.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.