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Finding the Fourth Proportional to 449,881.28, 674,804.64 and 112,921.28

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Solution

The fourth proportional to 449,881.28, 674,804.64 and 112,921.28 is: 169,377.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,881.28 : 674,804.64 = 112,921.28 : x
  2. Step 2: Convert to fraction form
    449,881.28/674,804.64 = 112,921.28/x
  3. Step 3: Cross multiply
    449,881.28x = 674,804.64 × 112,921.28
  4. Step 4: Simplify right side
    449,881.28x = 76,199,803,698.74
  5. Step 5: Solve for x
    x = 76,199,803,698.74/449,881.28
  6. Step 6: Final answer
    x = 169,377.58

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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.