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Finding the Fourth Proportional to 520,387.04, 718,054.80 and 293,949.92

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Solution

The fourth proportional to 520,387.04, 718,054.80 and 293,949.92 is: 405,606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,387.04 : 718,054.80 = 293,949.92 : x
  2. Step 2: Convert to fraction form
    520,387.04/718,054.80 = 293,949.92/x
  3. Step 3: Cross multiply
    520,387.04x = 718,054.80 × 293,949.92
  4. Step 4: Simplify right side
    520,387.04x = 211,072,151,015.62
  5. Step 5: Solve for x
    x = 211,072,151,015.62/520,387.04
  6. Step 6: Final answer
    x = 405,606.09

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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.