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Finding the Fourth Proportional to 211,798.13, 317,736.34 and 69,651.23

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Solution

The fourth proportional to 211,798.13, 317,736.34 and 69,651.23 is: 104,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,798.13 : 317,736.34 = 69,651.23 : x
  2. Step 2: Convert to fraction form
    211,798.13/317,736.34 = 69,651.23/x
  3. Step 3: Cross multiply
    211,798.13x = 317,736.34 × 69,651.23
  4. Step 4: Simplify right side
    211,798.13x = 22,130,725,133.89
  5. Step 5: Solve for x
    x = 22,130,725,133.89/211,798.13
  6. Step 6: Final answer
    x = 104,489.71

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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.