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Finding the Fourth Proportional to 638,608.77, 881,407.71 and 366,863.22

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Solution

The fourth proportional to 638,608.77, 881,407.71 and 366,863.22 is: 506,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,608.77 : 881,407.71 = 366,863.22 : x
  2. Step 2: Convert to fraction form
    638,608.77/881,407.71 = 366,863.22/x
  3. Step 3: Cross multiply
    638,608.77x = 881,407.71 × 366,863.22
  4. Step 4: Simplify right side
    638,608.77x = 323,356,070,623.43
  5. Step 5: Solve for x
    x = 323,356,070,623.43/638,608.77
  6. Step 6: Final answer
    x = 506,344.55

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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.