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Finding the Fourth Proportional to 624,972.80, 862,515.52 and 353,090.56

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Solution

The fourth proportional to 624,972.80, 862,515.52 and 353,090.56 is: 487,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,972.80 : 862,515.52 = 353,090.56 : x
  2. Step 2: Convert to fraction form
    624,972.80/862,515.52 = 353,090.56/x
  3. Step 3: Cross multiply
    624,972.80x = 862,515.52 × 353,090.56
  4. Step 4: Simplify right side
    624,972.80x = 304,546,087,965.49
  5. Step 5: Solve for x
    x = 304,546,087,965.49/624,972.80
  6. Step 6: Final answer
    x = 487,294.95

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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.