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Finding the Fourth Proportional to 119,748.40, 179,628.12 and 40,863.40

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Solution

The fourth proportional to 119,748.40, 179,628.12 and 40,863.40 is: 61,296.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,748.40 : 179,628.12 = 40,863.40 : x
  2. Step 2: Convert to fraction form
    119,748.40/179,628.12 = 40,863.40/x
  3. Step 3: Cross multiply
    119,748.40x = 179,628.12 × 40,863.40
  4. Step 4: Simplify right side
    119,748.40x = 7,340,215,718.81
  5. Step 5: Solve for x
    x = 7,340,215,718.81/119,748.40
  6. Step 6: Final answer
    x = 61,296.98

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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.