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Finding the Fourth Proportional to 393,476.60, 590,214.90 and 168,798.80

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Solution

The fourth proportional to 393,476.60, 590,214.90 and 168,798.80 is: 253,198.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,476.60 : 590,214.90 = 168,798.80 : x
  2. Step 2: Convert to fraction form
    393,476.60/590,214.90 = 168,798.80/x
  3. Step 3: Cross multiply
    393,476.60x = 590,214.90 × 168,798.80
  4. Step 4: Simplify right side
    393,476.60x = 99,627,566,862.12
  5. Step 5: Solve for x
    x = 99,627,566,862.12/393,476.60
  6. Step 6: Final answer
    x = 253,198.20

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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.