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Finding the Fourth Proportional to 633,912.64, 874,759.80 and 347,412.40

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Solution

The fourth proportional to 633,912.64, 874,759.80 and 347,412.40 is: 479,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,912.64 : 874,759.80 = 347,412.40 : x
  2. Step 2: Convert to fraction form
    633,912.64/874,759.80 = 347,412.40/x
  3. Step 3: Cross multiply
    633,912.64x = 874,759.80 × 347,412.40
  4. Step 4: Simplify right side
    633,912.64x = 303,902,401,541.52
  5. Step 5: Solve for x
    x = 303,902,401,541.52/633,912.64
  6. Step 6: Final answer
    x = 479,407.39

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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.