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Finding the Fourth Proportional to 520,681.27, 718,606.71 and 291,251.30

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Solution

The fourth proportional to 520,681.27, 718,606.71 and 291,251.30 is: 401,964.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,681.27 : 718,606.71 = 291,251.30 : x
  2. Step 2: Convert to fraction form
    520,681.27/718,606.71 = 291,251.30/x
  3. Step 3: Cross multiply
    520,681.27x = 718,606.71 × 291,251.30
  4. Step 4: Simplify right side
    520,681.27x = 209,295,138,476.22
  5. Step 5: Solve for x
    x = 209,295,138,476.22/520,681.27
  6. Step 6: Final answer
    x = 401,964.02

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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.