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Finding the Fourth Proportional to 641,778.54, 885,648.33 and 369,746.52

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Solution

The fourth proportional to 641,778.54, 885,648.33 and 369,746.52 is: 510,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,778.54 : 885,648.33 = 369,746.52 : x
  2. Step 2: Convert to fraction form
    641,778.54/885,648.33 = 369,746.52/x
  3. Step 3: Cross multiply
    641,778.54x = 885,648.33 × 369,746.52
  4. Step 4: Simplify right side
    641,778.54x = 327,465,387,961.31
  5. Step 5: Solve for x
    x = 327,465,387,961.31/641,778.54
  6. Step 6: Final answer
    x = 510,246.71

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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.