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Finding the Fourth Proportional to 404,700.72, 558,491.51 and 223,412.75

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Solution

The fourth proportional to 404,700.72, 558,491.51 and 223,412.75 is: 308,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,700.72 : 558,491.51 = 223,412.75 : x
  2. Step 2: Convert to fraction form
    404,700.72/558,491.51 = 223,412.75/x
  3. Step 3: Cross multiply
    404,700.72x = 558,491.51 × 223,412.75
  4. Step 4: Simplify right side
    404,700.72x = 124,774,123,961.17
  5. Step 5: Solve for x
    x = 124,774,123,961.17/404,700.72
  6. Step 6: Final answer
    x = 308,312.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.