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Finding the Fourth Proportional to 172,093.86, 257,963.40 and 124,591.28

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Solution

The fourth proportional to 172,093.86, 257,963.40 and 124,591.28 is: 186,758.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,093.86 : 257,963.40 = 124,591.28 : x
  2. Step 2: Convert to fraction form
    172,093.86/257,963.40 = 124,591.28/x
  3. Step 3: Cross multiply
    172,093.86x = 257,963.40 × 124,591.28
  4. Step 4: Simplify right side
    172,093.86x = 32,139,988,909.34
  5. Step 5: Solve for x
    x = 32,139,988,909.34/172,093.86
  6. Step 6: Final answer
    x = 186,758.49

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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.