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Finding the Fourth Proportional to 624,211.53, 861,436.35 and 352,288.92

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Solution

The fourth proportional to 624,211.53, 861,436.35 and 352,288.92 is: 486,172.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,211.53 : 861,436.35 = 352,288.92 : x
  2. Step 2: Convert to fraction form
    624,211.53/861,436.35 = 352,288.92/x
  3. Step 3: Cross multiply
    624,211.53x = 861,436.35 × 352,288.92
  4. Step 4: Simplify right side
    624,211.53x = 303,474,483,684.06
  5. Step 5: Solve for x
    x = 303,474,483,684.06/624,211.53
  6. Step 6: Final answer
    x = 486,172.51

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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.