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Finding the Fourth Proportional to 453,782.40, 680,673.60 and 312,064.80

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Solution

The fourth proportional to 453,782.40, 680,673.60 and 312,064.80 is: 468,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,782.40 : 680,673.60 = 312,064.80 : x
  2. Step 2: Convert to fraction form
    453,782.40/680,673.60 = 312,064.80/x
  3. Step 3: Cross multiply
    453,782.40x = 680,673.60 × 312,064.80
  4. Step 4: Simplify right side
    453,782.40x = 212,414,270,849.28
  5. Step 5: Solve for x
    x = 212,414,270,849.28/453,782.40
  6. Step 6: Final answer
    x = 468,097.20

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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.