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Finding the Fourth Proportional to 586,353.71, 809,169.68 and 318,081.71

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Solution

The fourth proportional to 586,353.71, 809,169.68 and 318,081.71 is: 438,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,353.71 : 809,169.68 = 318,081.71 : x
  2. Step 2: Convert to fraction form
    586,353.71/809,169.68 = 318,081.71/x
  3. Step 3: Cross multiply
    586,353.71x = 809,169.68 × 318,081.71
  4. Step 4: Simplify right side
    586,353.71x = 257,382,073,904.14
  5. Step 5: Solve for x
    x = 257,382,073,904.14/586,353.71
  6. Step 6: Final answer
    x = 438,953.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.