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Finding the Fourth Proportional to 461,086.76, 636,298.47 and 257,137.90

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Solution

The fourth proportional to 461,086.76, 636,298.47 and 257,137.90 is: 354,849.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,086.76 : 636,298.47 = 257,137.90 : x
  2. Step 2: Convert to fraction form
    461,086.76/636,298.47 = 257,137.90/x
  3. Step 3: Cross multiply
    461,086.76x = 636,298.47 × 257,137.90
  4. Step 4: Simplify right side
    461,086.76x = 163,616,450,758.27
  5. Step 5: Solve for x
    x = 163,616,450,758.27/461,086.76
  6. Step 6: Final answer
    x = 354,849.59

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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.