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Finding the Fourth Proportional to 620,397.45, 930,660.98 and 171,118.53

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Solution

The fourth proportional to 620,397.45, 930,660.98 and 171,118.53 is: 256,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,397.45 : 930,660.98 = 171,118.53 : x
  2. Step 2: Convert to fraction form
    620,397.45/930,660.98 = 171,118.53/x
  3. Step 3: Cross multiply
    620,397.45x = 930,660.98 × 171,118.53
  4. Step 4: Simplify right side
    620,397.45x = 159,253,337,970.37
  5. Step 5: Solve for x
    x = 159,253,337,970.37/620,397.45
  6. Step 6: Final answer
    x = 256,695.67

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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.