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Finding the Fourth Proportional to 520,658.57, 781,005.03 and 179,098.57

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Solution

The fourth proportional to 520,658.57, 781,005.03 and 179,098.57 is: 268,653.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,658.57 : 781,005.03 = 179,098.57 : x
  2. Step 2: Convert to fraction form
    520,658.57/781,005.03 = 179,098.57/x
  3. Step 3: Cross multiply
    520,658.57x = 781,005.03 × 179,098.57
  4. Step 4: Simplify right side
    520,658.57x = 139,876,880,130.78
  5. Step 5: Solve for x
    x = 139,876,880,130.78/520,658.57
  6. Step 6: Final answer
    x = 268,653.76

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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.