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Finding the Fourth Proportional to 768,811.32, 1,060,953.28 and 419,952.01

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Solution

The fourth proportional to 768,811.32, 1,060,953.28 and 419,952.01 is: 579,530.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,811.32 : 1,060,953.28 = 419,952.01 : x
  2. Step 2: Convert to fraction form
    768,811.32/1,060,953.28 = 419,952.01/x
  3. Step 3: Cross multiply
    768,811.32x = 1,060,953.28 × 419,952.01
  4. Step 4: Simplify right side
    768,811.32x = 445,549,462,452.09
  5. Step 5: Solve for x
    x = 445,549,462,452.09/768,811.32
  6. Step 6: Final answer
    x = 579,530.31

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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.