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Finding the Fourth Proportional to 393,807.60, 590,711.40 and 183,466.80

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Solution

The fourth proportional to 393,807.60, 590,711.40 and 183,466.80 is: 275,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,807.60 : 590,711.40 = 183,466.80 : x
  2. Step 2: Convert to fraction form
    393,807.60/590,711.40 = 183,466.80/x
  3. Step 3: Cross multiply
    393,807.60x = 590,711.40 × 183,466.80
  4. Step 4: Simplify right side
    393,807.60x = 108,375,930,281.52
  5. Step 5: Solve for x
    x = 108,375,930,281.52/393,807.60
  6. Step 6: Final answer
    x = 275,200.20

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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.