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Finding the Fourth Proportional to 189,254.76, 261,173.22 and 104,374.76

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Solution

The fourth proportional to 189,254.76, 261,173.22 and 104,374.76 is: 144,038.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,254.76 : 261,173.22 = 104,374.76 : x
  2. Step 2: Convert to fraction form
    189,254.76/261,173.22 = 104,374.76/x
  3. Step 3: Cross multiply
    189,254.76x = 261,173.22 × 104,374.76
  4. Step 4: Simplify right side
    189,254.76x = 27,259,892,155.93
  5. Step 5: Solve for x
    x = 27,259,892,155.93/189,254.76
  6. Step 6: Final answer
    x = 144,038.08

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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.