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Finding the Fourth Proportional to 476,451.76, 657,504.75 and 261,605.74

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Solution

The fourth proportional to 476,451.76, 657,504.75 and 261,605.74 is: 361,016.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,451.76 : 657,504.75 = 261,605.74 : x
  2. Step 2: Convert to fraction form
    476,451.76/657,504.75 = 261,605.74/x
  3. Step 3: Cross multiply
    476,451.76x = 657,504.75 × 261,605.74
  4. Step 4: Simplify right side
    476,451.76x = 172,007,016,677.27
  5. Step 5: Solve for x
    x = 172,007,016,677.27/476,451.76
  6. Step 6: Final answer
    x = 361,016.65

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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.