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Finding the Fourth Proportional to 768,406.97, 1,153,422.08 and 431,735.33

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Solution

The fourth proportional to 768,406.97, 1,153,422.08 and 431,735.33 is: 648,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,406.97 : 1,153,422.08 = 431,735.33 : x
  2. Step 2: Convert to fraction form
    768,406.97/1,153,422.08 = 431,735.33/x
  3. Step 3: Cross multiply
    768,406.97x = 1,153,422.08 × 431,735.33
  4. Step 4: Simplify right side
    768,406.97x = 497,973,062,338.09
  5. Step 5: Solve for x
    x = 497,973,062,338.09/768,406.97
  6. Step 6: Final answer
    x = 648,059.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.