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Finding the Fourth Proportional to 641,761.70, 885,723.80 and 369,777.47

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Solution

The fourth proportional to 641,761.70, 885,723.80 and 369,777.47 is: 510,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,761.70 : 885,723.80 = 369,777.47 : x
  2. Step 2: Convert to fraction form
    641,761.70/885,723.80 = 369,777.47/x
  3. Step 3: Cross multiply
    641,761.70x = 885,723.80 × 369,777.47
  4. Step 4: Simplify right side
    641,761.70x = 327,520,699,605.28
  5. Step 5: Solve for x
    x = 327,520,699,605.28/641,761.70
  6. Step 6: Final answer
    x = 510,346.29

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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.