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Finding the Fourth Proportional to 520,967.70, 718,944.66 and 294,613.20

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Solution

The fourth proportional to 520,967.70, 718,944.66 and 294,613.20 is: 406,571.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,967.70 : 718,944.66 = 294,613.20 : x
  2. Step 2: Convert to fraction form
    520,967.70/718,944.66 = 294,613.20/x
  3. Step 3: Cross multiply
    520,967.70x = 718,944.66 × 294,613.20
  4. Step 4: Simplify right side
    520,967.70x = 211,810,586,905.51
  5. Step 5: Solve for x
    x = 211,810,586,905.51/520,967.70
  6. Step 6: Final answer
    x = 406,571.44

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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.