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Finding the Fourth Proportional to 939,953.68, 1,297,158 and 557,981.92

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Solution

The fourth proportional to 939,953.68, 1,297,158 and 557,981.92 is: 770,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,953.68 : 1,297,158 = 557,981.92 : x
  2. Step 2: Convert to fraction form
    939,953.68/1,297,158 = 557,981.92/x
  3. Step 3: Cross multiply
    939,953.68x = 1,297,158 × 557,981.92
  4. Step 4: Simplify right side
    939,953.68x = 723,790,711,383.36
  5. Step 5: Solve for x
    x = 723,790,711,383.36/939,953.68
  6. Step 6: Final answer
    x = 770,028.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.