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Finding the Fourth Proportional to 453,295.20, 679,942.80 and 404,306.40

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Solution

The fourth proportional to 453,295.20, 679,942.80 and 404,306.40 is: 606,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,295.20 : 679,942.80 = 404,306.40 : x
  2. Step 2: Convert to fraction form
    453,295.20/679,942.80 = 404,306.40/x
  3. Step 3: Cross multiply
    453,295.20x = 679,942.80 × 404,306.40
  4. Step 4: Simplify right side
    453,295.20x = 274,905,225,673.92
  5. Step 5: Solve for x
    x = 274,905,225,673.92/453,295.20
  6. Step 6: Final answer
    x = 606,459.60

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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.