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Finding the Fourth Proportional to 586,903.71, 809,912.51 and 328,778.95

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Solution

The fourth proportional to 586,903.71, 809,912.51 and 328,778.95 is: 453,706.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,903.71 : 809,912.51 = 328,778.95 : x
  2. Step 2: Convert to fraction form
    586,903.71/809,912.51 = 328,778.95/x
  3. Step 3: Cross multiply
    586,903.71x = 809,912.51 × 328,778.95
  4. Step 4: Simplify right side
    586,903.71x = 266,282,185,561.88
  5. Step 5: Solve for x
    x = 266,282,185,561.88/586,903.71
  6. Step 6: Final answer
    x = 453,706.77

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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.