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Finding the Fourth Proportional to 171,663.93, 257,210.78 and 121,495.77

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Solution

The fourth proportional to 171,663.93, 257,210.78 and 121,495.77 is: 182,041.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,663.93 : 257,210.78 = 121,495.77 : x
  2. Step 2: Convert to fraction form
    171,663.93/257,210.78 = 121,495.77/x
  3. Step 3: Cross multiply
    171,663.93x = 257,210.78 × 121,495.77
  4. Step 4: Simplify right side
    171,663.93x = 31,250,021,160.92
  5. Step 5: Solve for x
    x = 31,250,021,160.92/171,663.93
  6. Step 6: Final answer
    x = 182,041.86

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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.