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Finding the Fourth Proportional to 641,180.34, 884,854.90 and 354,695.48

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Solution

The fourth proportional to 641,180.34, 884,854.90 and 354,695.48 is: 489,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,180.34 : 884,854.90 = 354,695.48 : x
  2. Step 2: Convert to fraction form
    641,180.34/884,854.90 = 354,695.48/x
  3. Step 3: Cross multiply
    641,180.34x = 884,854.90 × 354,695.48
  4. Step 4: Simplify right side
    641,180.34x = 313,854,033,485.85
  5. Step 5: Solve for x
    x = 313,854,033,485.85/641,180.34
  6. Step 6: Final answer
    x = 489,494.16

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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.