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Finding the Fourth Proportional to 211,750.70, 317,558.61 and 69,562.97

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Solution

The fourth proportional to 211,750.70, 317,558.61 and 69,562.97 is: 104,322.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,750.70 : 317,558.61 = 69,562.97 : x
  2. Step 2: Convert to fraction form
    211,750.70/317,558.61 = 69,562.97/x
  3. Step 3: Cross multiply
    211,750.70x = 317,558.61 × 69,562.97
  4. Step 4: Simplify right side
    211,750.70x = 22,090,319,859.37
  5. Step 5: Solve for x
    x = 22,090,319,859.37/211,750.70
  6. Step 6: Final answer
    x = 104,322.30

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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.