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Finding the Fourth Proportional to 375,779.54, 563,661.09 and 91,471.59

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Solution

The fourth proportional to 375,779.54, 563,661.09 and 91,471.59 is: 137,205.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,779.54 : 563,661.09 = 91,471.59 : x
  2. Step 2: Convert to fraction form
    375,779.54/563,661.09 = 91,471.59/x
  3. Step 3: Cross multiply
    375,779.54x = 563,661.09 × 91,471.59
  4. Step 4: Simplify right side
    375,779.54x = 51,558,976,123.43
  5. Step 5: Solve for x
    x = 51,558,976,123.43/375,779.54
  6. Step 6: Final answer
    x = 137,205.38

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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.