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Finding the Fourth Proportional to 419,513.76, 632,433.06 and 392,453.28

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Solution

The fourth proportional to 419,513.76, 632,433.06 and 392,453.28 is: 591,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,513.76 : 632,433.06 = 392,453.28 : x
  2. Step 2: Convert to fraction form
    419,513.76/632,433.06 = 392,453.28/x
  3. Step 3: Cross multiply
    419,513.76x = 632,433.06 × 392,453.28
  4. Step 4: Simplify right side
    419,513.76x = 248,200,428,777.44
  5. Step 5: Solve for x
    x = 248,200,428,777.44/419,513.76
  6. Step 6: Final answer
    x = 591,638.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.