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Finding the Fourth Proportional to 711,656.88, 981,950.04 and 405,727.44

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Solution

The fourth proportional to 711,656.88, 981,950.04 and 405,727.44 is: 559,826.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,656.88 : 981,950.04 = 405,727.44 : x
  2. Step 2: Convert to fraction form
    711,656.88/981,950.04 = 405,727.44/x
  3. Step 3: Cross multiply
    711,656.88x = 981,950.04 × 405,727.44
  4. Step 4: Simplify right side
    711,656.88x = 398,404,075,937.10
  5. Step 5: Solve for x
    x = 398,404,075,937.10/711,656.88
  6. Step 6: Final answer
    x = 559,826.07

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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.