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Finding the Fourth Proportional to 586,116.65, 878,169.57 and 393,630.28

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Solution

The fourth proportional to 586,116.65, 878,169.57 and 393,630.28 is: 589,770.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,116.65 : 878,169.57 = 393,630.28 : x
  2. Step 2: Convert to fraction form
    586,116.65/878,169.57 = 393,630.28/x
  3. Step 3: Cross multiply
    586,116.65x = 878,169.57 × 393,630.28
  4. Step 4: Simplify right side
    586,116.65x = 345,674,127,367.58
  5. Step 5: Solve for x
    x = 345,674,127,367.58/586,116.65
  6. Step 6: Final answer
    x = 589,770.19

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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.