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Finding the Fourth Proportional to 626,741.96, 864,957.42 and 354,857.76

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Solution

The fourth proportional to 626,741.96, 864,957.42 and 354,857.76 is: 489,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,741.96 : 864,957.42 = 354,857.76 : x
  2. Step 2: Convert to fraction form
    626,741.96/864,957.42 = 354,857.76/x
  3. Step 3: Cross multiply
    626,741.96x = 864,957.42 × 354,857.76
  4. Step 4: Simplify right side
    626,741.96x = 306,936,852,556.58
  5. Step 5: Solve for x
    x = 306,936,852,556.58/626,741.96
  6. Step 6: Final answer
    x = 489,734.01

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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.