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Finding the Fourth Proportional to 52,349, 78,537.90 and 15,413

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Solution

The fourth proportional to 52,349, 78,537.90 and 15,413 is: 23,123.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,349 : 78,537.90 = 15,413 : x
  2. Step 2: Convert to fraction form
    52,349/78,537.90 = 15,413/x
  3. Step 3: Cross multiply
    52,349x = 78,537.90 × 15,413
  4. Step 4: Simplify right side
    52,349x = 1,210,504,652.70
  5. Step 5: Solve for x
    x = 1,210,504,652.70/52,349
  6. Step 6: Final answer
    x = 23,123.74

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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.