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Finding the Fourth Proportional to 520,963.16, 718,239.96 and 375,647.33

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Solution

The fourth proportional to 520,963.16, 718,239.96 and 375,647.33 is: 517,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,963.16 : 718,239.96 = 375,647.33 : x
  2. Step 2: Convert to fraction form
    520,963.16/718,239.96 = 375,647.33/x
  3. Step 3: Cross multiply
    520,963.16x = 718,239.96 × 375,647.33
  4. Step 4: Simplify right side
    520,963.16x = 269,804,919,682.11
  5. Step 5: Solve for x
    x = 269,804,919,682.11/520,963.16
  6. Step 6: Final answer
    x = 517,896.36

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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.