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Finding the Fourth Proportional to 638,578.77, 881,366.31 and 366,833.09

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Solution

The fourth proportional to 638,578.77, 881,366.31 and 366,833.09 is: 506,302.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,578.77 : 881,366.31 = 366,833.09 : x
  2. Step 2: Convert to fraction form
    638,578.77/881,366.31 = 366,833.09/x
  3. Step 3: Cross multiply
    638,578.77x = 881,366.31 × 366,833.09
  4. Step 4: Simplify right side
    638,578.77x = 323,314,322,512.37
  5. Step 5: Solve for x
    x = 323,314,322,512.37/638,578.77
  6. Step 6: Final answer
    x = 506,302.96

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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.