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Finding the Fourth Proportional to 641,626.74, 885,538.08 and 369,641.70

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Solution

The fourth proportional to 641,626.74, 885,538.08 and 369,641.70 is: 510,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,626.74 : 885,538.08 = 369,641.70 : x
  2. Step 2: Convert to fraction form
    641,626.74/885,538.08 = 369,641.70/x
  3. Step 3: Cross multiply
    641,626.74x = 885,538.08 × 369,641.70
  4. Step 4: Simplify right side
    641,626.74x = 327,331,801,305.94
  5. Step 5: Solve for x
    x = 327,331,801,305.94/641,626.74
  6. Step 6: Final answer
    x = 510,159.23

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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.