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Finding the Fourth Proportional to 641,535.86, 885,220.86 and 369,550.63

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Solution

The fourth proportional to 641,535.86, 885,220.86 and 369,550.63 is: 509,923.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,535.86 : 885,220.86 = 369,550.63 : x
  2. Step 2: Convert to fraction form
    641,535.86/885,220.86 = 369,550.63/x
  3. Step 3: Cross multiply
    641,535.86x = 885,220.86 × 369,550.63
  4. Step 4: Simplify right side
    641,535.86x = 327,133,924,289.09
  5. Step 5: Solve for x
    x = 327,133,924,289.09/641,535.86
  6. Step 6: Final answer
    x = 509,923.05

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Double scale
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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.