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Finding the Fourth Proportional to 107,889.94, 148,818.62 and 71,590.60

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Solution

The fourth proportional to 107,889.94, 148,818.62 and 71,590.60 is: 98,748.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,889.94 : 148,818.62 = 71,590.60 : x
  2. Step 2: Convert to fraction form
    107,889.94/148,818.62 = 71,590.60/x
  3. Step 3: Cross multiply
    107,889.94x = 148,818.62 × 71,590.60
  4. Step 4: Simplify right side
    107,889.94x = 10,654,014,296.97
  5. Step 5: Solve for x
    x = 10,654,014,296.97/107,889.94
  6. Step 6: Final answer
    x = 98,748.91

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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.