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Finding the Fourth Proportional to 171,841.76, 257,686.52 and 91,860.35

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Solution

The fourth proportional to 171,841.76, 257,686.52 and 91,860.35 is: 137,749.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,841.76 : 257,686.52 = 91,860.35 : x
  2. Step 2: Convert to fraction form
    171,841.76/257,686.52 = 91,860.35/x
  3. Step 3: Cross multiply
    171,841.76x = 257,686.52 × 91,860.35
  4. Step 4: Simplify right side
    171,841.76x = 23,671,173,917.48
  5. Step 5: Solve for x
    x = 23,671,173,917.48/171,841.76
  6. Step 6: Final answer
    x = 137,749.84

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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.