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Finding the Fourth Proportional to 273,742.20, 410,030.10 and 221,254.20

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Solution

The fourth proportional to 273,742.20, 410,030.10 and 221,254.20 is: 331,409.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,742.20 : 410,030.10 = 221,254.20 : x
  2. Step 2: Convert to fraction form
    273,742.20/410,030.10 = 221,254.20/x
  3. Step 3: Cross multiply
    273,742.20x = 410,030.10 × 221,254.20
  4. Step 4: Simplify right side
    273,742.20x = 90,720,881,751.42
  5. Step 5: Solve for x
    x = 90,720,881,751.42/273,742.20
  6. Step 6: Final answer
    x = 331,409.92

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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.