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Finding the Fourth Proportional to 351,776.88, 527,660.28 and 85,536.72

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Solution

The fourth proportional to 351,776.88, 527,660.28 and 85,536.72 is: 128,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,776.88 : 527,660.28 = 85,536.72 : x
  2. Step 2: Convert to fraction form
    351,776.88/527,660.28 = 85,536.72/x
  3. Step 3: Cross multiply
    351,776.88x = 527,660.28 × 85,536.72
  4. Step 4: Simplify right side
    351,776.88x = 45,134,329,625.48
  5. Step 5: Solve for x
    x = 45,134,329,625.48/351,776.88
  6. Step 6: Final answer
    x = 128,303.85

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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.