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Finding the Fourth Proportional to 248,641.08, 343,124.74 and 135,463.84

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Solution

The fourth proportional to 248,641.08, 343,124.74 and 135,463.84 is: 186,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,641.08 : 343,124.74 = 135,463.84 : x
  2. Step 2: Convert to fraction form
    248,641.08/343,124.74 = 135,463.84/x
  3. Step 3: Cross multiply
    248,641.08x = 343,124.74 × 135,463.84
  4. Step 4: Simplify right side
    248,641.08x = 46,480,994,879.40
  5. Step 5: Solve for x
    x = 46,480,994,879.40/248,641.08
  6. Step 6: Final answer
    x = 186,940.13

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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.