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Finding the Fourth Proportional to 519,151.66, 716,427.95 and 289,706.50

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Solution

The fourth proportional to 519,151.66, 716,427.95 and 289,706.50 is: 399,794.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,151.66 : 716,427.95 = 289,706.50 : x
  2. Step 2: Convert to fraction form
    519,151.66/716,427.95 = 289,706.50/x
  3. Step 3: Cross multiply
    519,151.66x = 716,427.95 × 289,706.50
  4. Step 4: Simplify right side
    519,151.66x = 207,553,833,896.68
  5. Step 5: Solve for x
    x = 207,553,833,896.68/519,151.66
  6. Step 6: Final answer
    x = 399,794.22

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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.