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Finding the Fourth Proportional to 172,031.88, 258,037.56 and 53,686.56

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Solution

The fourth proportional to 172,031.88, 258,037.56 and 53,686.56 is: 80,526.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,031.88 : 258,037.56 = 53,686.56 : x
  2. Step 2: Convert to fraction form
    172,031.88/258,037.56 = 53,686.56/x
  3. Step 3: Cross multiply
    172,031.88x = 258,037.56 × 53,686.56
  4. Step 4: Simplify right side
    172,031.88x = 13,853,148,947.19
  5. Step 5: Solve for x
    x = 13,853,148,947.19/172,031.88
  6. Step 6: Final answer
    x = 80,526.64

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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.