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Finding the Fourth Proportional to 74,659.39, 103,022.48 and 45,974.45

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Solution

The fourth proportional to 74,659.39, 103,022.48 and 45,974.45 is: 63,440.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,659.39 : 103,022.48 = 45,974.45 : x
  2. Step 2: Convert to fraction form
    74,659.39/103,022.48 = 45,974.45/x
  3. Step 3: Cross multiply
    74,659.39x = 103,022.48 × 45,974.45
  4. Step 4: Simplify right side
    74,659.39x = 4,736,402,228.13
  5. Step 5: Solve for x
    x = 4,736,402,228.13/74,659.39
  6. Step 6: Final answer
    x = 63,440.14

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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.