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Finding the Fourth Proportional to 620,920.14, 931,377.78 and 171,640.14

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Solution

The fourth proportional to 620,920.14, 931,377.78 and 171,640.14 is: 257,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,920.14 : 931,377.78 = 171,640.14 : x
  2. Step 2: Convert to fraction form
    620,920.14/931,377.78 = 171,640.14/x
  3. Step 3: Cross multiply
    620,920.14x = 931,377.78 × 171,640.14
  4. Step 4: Simplify right side
    620,920.14x = 159,861,812,552.09
  5. Step 5: Solve for x
    x = 159,861,812,552.09/620,920.14
  6. Step 6: Final answer
    x = 257,459.54

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1.5x scale

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.