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Finding the Fourth Proportional to 140,374.54, 193,661.91 and 86,566.15

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Solution

The fourth proportional to 140,374.54, 193,661.91 and 86,566.15 is: 119,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,374.54 : 193,661.91 = 86,566.15 : x
  2. Step 2: Convert to fraction form
    140,374.54/193,661.91 = 86,566.15/x
  3. Step 3: Cross multiply
    140,374.54x = 193,661.91 × 86,566.15
  4. Step 4: Simplify right side
    140,374.54x = 16,764,565,950.35
  5. Step 5: Solve for x
    x = 16,764,565,950.35/140,374.54
  6. Step 6: Final answer
    x = 119,427.40

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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.