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Finding the Fourth Proportional to 633,520.82, 874,258.68 and 347,040.80

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Solution

The fourth proportional to 633,520.82, 874,258.68 and 347,040.80 is: 478,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,520.82 : 874,258.68 = 347,040.80 : x
  2. Step 2: Convert to fraction form
    633,520.82/874,258.68 = 347,040.80/x
  3. Step 3: Cross multiply
    633,520.82x = 874,258.68 × 347,040.80
  4. Step 4: Simplify right side
    633,520.82x = 303,403,431,714.14
  5. Step 5: Solve for x
    x = 303,403,431,714.14/633,520.82
  6. Step 6: Final answer
    x = 478,916.28

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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.