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Finding the Fourth Proportional to 626,912.73, 865,149.86 and 354,973.46

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Solution

The fourth proportional to 626,912.73, 865,149.86 and 354,973.46 is: 489,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,912.73 : 865,149.86 = 354,973.46 : x
  2. Step 2: Convert to fraction form
    626,912.73/865,149.86 = 354,973.46/x
  3. Step 3: Cross multiply
    626,912.73x = 865,149.86 × 354,973.46
  4. Step 4: Simplify right side
    626,912.73x = 307,105,235,784.40
  5. Step 5: Solve for x
    x = 307,105,235,784.40/626,912.73
  6. Step 6: Final answer
    x = 489,869.20

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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.