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Finding the Fourth Proportional to 586,116.90, 878,169.94 and 393,630.53

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Solution

The fourth proportional to 586,116.90, 878,169.94 and 393,630.53 is: 589,770.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,116.90 : 878,169.94 = 393,630.53 : x
  2. Step 2: Convert to fraction form
    586,116.90/878,169.94 = 393,630.53/x
  3. Step 3: Cross multiply
    586,116.90x = 878,169.94 × 393,630.53
  4. Step 4: Simplify right side
    586,116.90x = 345,674,493,537.34
  5. Step 5: Solve for x
    x = 345,674,493,537.34/586,116.90
  6. Step 6: Final answer
    x = 589,770.56

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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.