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Finding the Fourth Proportional to 172,277.17, 258,415.76 and 53,957.77

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Solution

The fourth proportional to 172,277.17, 258,415.76 and 53,957.77 is: 80,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,277.17 : 258,415.76 = 53,957.77 : x
  2. Step 2: Convert to fraction form
    172,277.17/258,415.76 = 53,957.77/x
  3. Step 3: Cross multiply
    172,277.17x = 258,415.76 × 53,957.77
  4. Step 4: Simplify right side
    172,277.17x = 13,943,537,631.31
  5. Step 5: Solve for x
    x = 13,943,537,631.31/172,277.17
  6. Step 6: Final answer
    x = 80,936.65

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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.