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Finding the Fourth Proportional to 306,661.46, 423,197.60 and 170,696.88

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Solution

The fourth proportional to 306,661.46, 423,197.60 and 170,696.88 is: 235,564.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,661.46 : 423,197.60 = 170,696.88 : x
  2. Step 2: Convert to fraction form
    306,661.46/423,197.60 = 170,696.88/x
  3. Step 3: Cross multiply
    306,661.46x = 423,197.60 × 170,696.88
  4. Step 4: Simplify right side
    306,661.46x = 72,238,509,090.00
  5. Step 5: Solve for x
    x = 72,238,509,090.00/306,661.46
  6. Step 6: Final answer
    x = 235,564.36

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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.