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Finding the Fourth Proportional to 629,759.82, 869,189.86 and 436,691.46

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Solution

The fourth proportional to 629,759.82, 869,189.86 and 436,691.46 is: 602,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,759.82 : 869,189.86 = 436,691.46 : x
  2. Step 2: Convert to fraction form
    629,759.82/869,189.86 = 436,691.46/x
  3. Step 3: Cross multiply
    629,759.82x = 869,189.86 × 436,691.46
  4. Step 4: Simplify right side
    629,759.82x = 379,567,788,980.60
  5. Step 5: Solve for x
    x = 379,567,788,980.60/629,759.82
  6. Step 6: Final answer
    x = 602,718.33

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1.5x scale

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.