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Finding the Fourth Proportional to 375,405.68, 563,103.77 and 91,098.56

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Solution

The fourth proportional to 375,405.68, 563,103.77 and 91,098.56 is: 136,646.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,405.68 : 563,103.77 = 91,098.56 : x
  2. Step 2: Convert to fraction form
    375,405.68/563,103.77 = 91,098.56/x
  3. Step 3: Cross multiply
    375,405.68x = 563,103.77 × 91,098.56
  4. Step 4: Simplify right side
    375,405.68x = 51,297,943,529.84
  5. Step 5: Solve for x
    x = 51,297,943,529.84/375,405.68
  6. Step 6: Final answer
    x = 136,646.69

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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.