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Finding the Fourth Proportional to 211,717.67, 317,545.85 and 69,568.54

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Solution

The fourth proportional to 211,717.67, 317,545.85 and 69,568.54 is: 104,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,717.67 : 317,545.85 = 69,568.54 : x
  2. Step 2: Convert to fraction form
    211,717.67/317,545.85 = 69,568.54/x
  3. Step 3: Cross multiply
    211,717.67x = 317,545.85 × 69,568.54
  4. Step 4: Simplify right side
    211,717.67x = 22,091,200,547.62
  5. Step 5: Solve for x
    x = 22,091,200,547.62/211,717.67
  6. Step 6: Final answer
    x = 104,342.74

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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.