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Finding the Fourth Proportional to 508,740, 763,124.58 and 134,763

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Solution

The fourth proportional to 508,740, 763,124.58 and 134,763 is: 202,148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,740 : 763,124.58 = 134,763 : x
  2. Step 2: Convert to fraction form
    508,740/763,124.58 = 134,763/x
  3. Step 3: Cross multiply
    508,740x = 763,124.58 × 134,763
  4. Step 4: Simplify right side
    508,740x = 102,840,957,774.54
  5. Step 5: Solve for x
    x = 102,840,957,774.54/508,740
  6. Step 6: Final answer
    x = 202,148.36

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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.