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Finding the Fourth Proportional to 257,080.70, 354,885.94 and 169,918.30

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Solution

The fourth proportional to 257,080.70, 354,885.94 and 169,918.30 is: 234,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,080.70 : 354,885.94 = 169,918.30 : x
  2. Step 2: Convert to fraction form
    257,080.70/354,885.94 = 169,918.30/x
  3. Step 3: Cross multiply
    257,080.70x = 354,885.94 × 169,918.30
  4. Step 4: Simplify right side
    257,080.70x = 60,301,616,274.71
  5. Step 5: Solve for x
    x = 60,301,616,274.71/257,080.70
  6. Step 6: Final answer
    x = 234,562.98

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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.