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Finding the Fourth Proportional to 211,609.58, 317,381.58 and 61,809.66

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Solution

The fourth proportional to 211,609.58, 317,381.58 and 61,809.66 is: 92,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,609.58 : 317,381.58 = 61,809.66 : x
  2. Step 2: Convert to fraction form
    211,609.58/317,381.58 = 61,809.66/x
  3. Step 3: Cross multiply
    211,609.58x = 317,381.58 × 61,809.66
  4. Step 4: Simplify right side
    211,609.58x = 19,617,247,550.06
  5. Step 5: Solve for x
    x = 19,617,247,550.06/211,609.58
  6. Step 6: Final answer
    x = 92,704.91

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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.