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Finding the Fourth Proportional to 519,171.93, 716,455.83 and 289,726.77

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Solution

The fourth proportional to 519,171.93, 716,455.83 and 289,726.77 is: 399,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,171.93 : 716,455.83 = 289,726.77 : x
  2. Step 2: Convert to fraction form
    519,171.93/716,455.83 = 289,726.77/x
  3. Step 3: Cross multiply
    519,171.93x = 716,455.83 × 289,726.77
  4. Step 4: Simplify right side
    519,171.93x = 207,576,437,246.75
  5. Step 5: Solve for x
    x = 207,576,437,246.75/519,171.93
  6. Step 6: Final answer
    x = 399,822.15

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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.