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Finding the Fourth Proportional to 661,059.54, 991,589.64 and 436,367.46

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Solution

The fourth proportional to 661,059.54, 991,589.64 and 436,367.46 is: 654,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,059.54 : 991,589.64 = 436,367.46 : x
  2. Step 2: Convert to fraction form
    661,059.54/991,589.64 = 436,367.46/x
  3. Step 3: Cross multiply
    661,059.54x = 991,589.64 × 436,367.46
  4. Step 4: Simplify right side
    661,059.54x = 432,697,452,569.11
  5. Step 5: Solve for x
    x = 432,697,452,569.11/661,059.54
  6. Step 6: Final answer
    x = 654,551.41

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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.