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Finding the Fourth Proportional to 419,655.56, 579,106.55 and 238,366.92

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Solution

The fourth proportional to 419,655.56, 579,106.55 and 238,366.92 is: 328,936.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,655.56 : 579,106.55 = 238,366.92 : x
  2. Step 2: Convert to fraction form
    419,655.56/579,106.55 = 238,366.92/x
  3. Step 3: Cross multiply
    419,655.56x = 579,106.55 × 238,366.92
  4. Step 4: Simplify right side
    419,655.56x = 138,039,843,483.49
  5. Step 5: Solve for x
    x = 138,039,843,483.49/419,655.56
  6. Step 6: Final answer
    x = 328,936.06

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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.