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Finding the Fourth Proportional to 620,766.28, 930,775.20 and 404,785.45

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Solution

The fourth proportional to 620,766.28, 930,775.20 and 404,785.45 is: 606,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,766.28 : 930,775.20 = 404,785.45 : x
  2. Step 2: Convert to fraction form
    620,766.28/930,775.20 = 404,785.45/x
  3. Step 3: Cross multiply
    620,766.28x = 930,775.20 × 404,785.45
  4. Step 4: Simplify right side
    620,766.28x = 376,764,258,180.84
  5. Step 5: Solve for x
    x = 376,764,258,180.84/620,766.28
  6. Step 6: Final answer
    x = 606,934.16

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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.