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Finding the Fourth Proportional to 393,670.40, 590,582.40 and 169,030.40

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Solution

The fourth proportional to 393,670.40, 590,582.40 and 169,030.40 is: 253,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,670.40 : 590,582.40 = 169,030.40 : x
  2. Step 2: Convert to fraction form
    393,670.40/590,582.40 = 169,030.40/x
  3. Step 3: Cross multiply
    393,670.40x = 590,582.40 × 169,030.40
  4. Step 4: Simplify right side
    393,670.40x = 99,826,379,304.96
  5. Step 5: Solve for x
    x = 99,826,379,304.96/393,670.40
  6. Step 6: Final answer
    x = 253,578.58

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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.