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Finding the Fourth Proportional to 626,951.56, 865,203.18 and 355,012.12

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Solution

The fourth proportional to 626,951.56, 865,203.18 and 355,012.12 is: 489,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,951.56 : 865,203.18 = 355,012.12 : x
  2. Step 2: Convert to fraction form
    626,951.56/865,203.18 = 355,012.12/x
  3. Step 3: Cross multiply
    626,951.56x = 865,203.18 × 355,012.12
  4. Step 4: Simplify right side
    626,951.56x = 307,157,615,162.54
  5. Step 5: Solve for x
    x = 307,157,615,162.54/626,951.56
  6. Step 6: Final answer
    x = 489,922.40

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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.