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Finding the Fourth Proportional to 626,543.58, 864,620.82 and 354,663.03

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Solution

The fourth proportional to 626,543.58, 864,620.82 and 354,663.03 is: 489,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,543.58 : 864,620.82 = 354,663.03 : x
  2. Step 2: Convert to fraction form
    626,543.58/864,620.82 = 354,663.03/x
  3. Step 3: Cross multiply
    626,543.58x = 864,620.82 × 354,663.03
  4. Step 4: Simplify right side
    626,543.58x = 306,649,039,822.29
  5. Step 5: Solve for x
    x = 306,649,039,822.29/626,543.58
  6. Step 6: Final answer
    x = 489,429.71

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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.