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Finding the Fourth Proportional to 236,456.93, 354,619.74 and 65,639.40

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Solution

The fourth proportional to 236,456.93, 354,619.74 and 65,639.40 is: 98,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,456.93 : 354,619.74 = 65,639.40 : x
  2. Step 2: Convert to fraction form
    236,456.93/354,619.74 = 65,639.40/x
  3. Step 3: Cross multiply
    236,456.93x = 354,619.74 × 65,639.40
  4. Step 4: Simplify right side
    236,456.93x = 23,277,026,961.76
  5. Step 5: Solve for x
    x = 23,277,026,961.76/236,456.93
  6. Step 6: Final answer
    x = 98,440.87

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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.