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Finding the Fourth Proportional to 393,602.60, 590,403.90 and 168,924.80

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Solution

The fourth proportional to 393,602.60, 590,403.90 and 168,924.80 is: 253,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,602.60 : 590,403.90 = 168,924.80 : x
  2. Step 2: Convert to fraction form
    393,602.60/590,403.90 = 168,924.80/x
  3. Step 3: Cross multiply
    393,602.60x = 590,403.90 × 168,924.80
  4. Step 4: Simplify right side
    393,602.60x = 99,733,860,726.72
  5. Step 5: Solve for x
    x = 99,733,860,726.72/393,602.60
  6. Step 6: Final answer
    x = 253,387.20

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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.