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Finding the Fourth Proportional to 343,876.80, 515,815.20 and 94,558.80

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Solution

The fourth proportional to 343,876.80, 515,815.20 and 94,558.80 is: 141,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,876.80 : 515,815.20 = 94,558.80 : x
  2. Step 2: Convert to fraction form
    343,876.80/515,815.20 = 94,558.80/x
  3. Step 3: Cross multiply
    343,876.80x = 515,815.20 × 94,558.80
  4. Step 4: Simplify right side
    343,876.80x = 48,774,866,333.76
  5. Step 5: Solve for x
    x = 48,774,866,333.76/343,876.80
  6. Step 6: Final answer
    x = 141,838.20

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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.