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Finding the Fourth Proportional to 641,633.23, 885,433.92 and 369,701.65

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Solution

The fourth proportional to 641,633.23, 885,433.92 and 369,701.65 is: 510,176.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,633.23 : 885,433.92 = 369,701.65 : x
  2. Step 2: Convert to fraction form
    641,633.23/885,433.92 = 369,701.65/x
  3. Step 3: Cross multiply
    641,633.23x = 885,433.92 × 369,701.65
  4. Step 4: Simplify right side
    641,633.23x = 327,346,381,189.97
  5. Step 5: Solve for x
    x = 327,346,381,189.97/641,633.23
  6. Step 6: Final answer
    x = 510,176.79

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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.