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Finding the Fourth Proportional to 664,806.40, 996,043.20 and 545,833.60

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Solution

The fourth proportional to 664,806.40, 996,043.20 and 545,833.60 is: 817,792.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,806.40 : 996,043.20 = 545,833.60 : x
  2. Step 2: Convert to fraction form
    664,806.40/996,043.20 = 545,833.60/x
  3. Step 3: Cross multiply
    664,806.40x = 996,043.20 × 545,833.60
  4. Step 4: Simplify right side
    664,806.40x = 543,673,845,611.52
  5. Step 5: Solve for x
    x = 543,673,845,611.52/664,806.40
  6. Step 6: Final answer
    x = 817,792.74

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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.