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Finding the Fourth Proportional to 247,486.40, 341,531.02 and 140,054.48

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Solution

The fourth proportional to 247,486.40, 341,531.02 and 140,054.48 is: 193,275.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,486.40 : 341,531.02 = 140,054.48 : x
  2. Step 2: Convert to fraction form
    247,486.40/341,531.02 = 140,054.48/x
  3. Step 3: Cross multiply
    247,486.40x = 341,531.02 × 140,054.48
  4. Step 4: Simplify right side
    247,486.40x = 47,832,949,409.97
  5. Step 5: Solve for x
    x = 47,832,949,409.97/247,486.40
  6. Step 6: Final answer
    x = 193,275.06

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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.