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Finding the Fourth Proportional to 933.02, 1,405.06 and 812.73

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Solution

The fourth proportional to 933.02, 1,405.06 and 812.73 is: 1,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.02 : 1,405.06 = 812.73 : x
  2. Step 2: Convert to fraction form
    933.02/1,405.06 = 812.73/x
  3. Step 3: Cross multiply
    933.02x = 1,405.06 × 812.73
  4. Step 4: Simplify right side
    933.02x = 1,141,934.41
  5. Step 5: Solve for x
    x = 1,141,934.41/933.02
  6. Step 6: Final answer
    x = 1,223.91

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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.