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Finding the Fourth Proportional to 84,364.47, 126,743.54 and 49,328.73

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Solution

The fourth proportional to 84,364.47, 126,743.54 and 49,328.73 is: 74,108.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,364.47 : 126,743.54 = 49,328.73 : x
  2. Step 2: Convert to fraction form
    84,364.47/126,743.54 = 49,328.73/x
  3. Step 3: Cross multiply
    84,364.47x = 126,743.54 × 49,328.73
  4. Step 4: Simplify right side
    84,364.47x = 6,252,097,617.26
  5. Step 5: Solve for x
    x = 6,252,097,617.26/84,364.47
  6. Step 6: Final answer
    x = 74,108.18

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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.