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Finding the Fourth Proportional to 257,237.76, 355,111.32 and 171,339.68

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Solution

The fourth proportional to 257,237.76, 355,111.32 and 171,339.68 is: 236,530.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,237.76 : 355,111.32 = 171,339.68 : x
  2. Step 2: Convert to fraction form
    257,237.76/355,111.32 = 171,339.68/x
  3. Step 3: Cross multiply
    257,237.76x = 355,111.32 × 171,339.68
  4. Step 4: Simplify right side
    257,237.76x = 60,844,659,933.18
  5. Step 5: Solve for x
    x = 60,844,659,933.18/257,237.76
  6. Step 6: Final answer
    x = 236,530.83

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1.5x scale

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.