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Finding the Fourth Proportional to 620,455.81, 930,737.32 and 171,176.68

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Solution

The fourth proportional to 620,455.81, 930,737.32 and 171,176.68 is: 256,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,455.81 : 930,737.32 = 171,176.68 : x
  2. Step 2: Convert to fraction form
    620,455.81/930,737.32 = 171,176.68/x
  3. Step 3: Cross multiply
    620,455.81x = 930,737.32 × 171,176.68
  4. Step 4: Simplify right side
    620,455.81x = 159,320,524,389.70
  5. Step 5: Solve for x
    x = 159,320,524,389.70/620,455.81
  6. Step 6: Final answer
    x = 256,779.81

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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.