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Finding the Fourth Proportional to 641,785.77, 885,630.62 and 351,341.69

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Solution

The fourth proportional to 641,785.77, 885,630.62 and 351,341.69 is: 484,833.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,785.77 : 885,630.62 = 351,341.69 : x
  2. Step 2: Convert to fraction form
    641,785.77/885,630.62 = 351,341.69/x
  3. Step 3: Cross multiply
    641,785.77x = 885,630.62 × 351,341.69
  4. Step 4: Simplify right side
    641,785.77x = 311,158,952,561.69
  5. Step 5: Solve for x
    x = 311,158,952,561.69/641,785.77
  6. Step 6: Final answer
    x = 484,833.05

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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.