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Finding the Fourth Proportional to 933.12, 1,404.54 and 792.18

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Solution

The fourth proportional to 933.12, 1,404.54 and 792.18 is: 1,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.12 : 1,404.54 = 792.18 : x
  2. Step 2: Convert to fraction form
    933.12/1,404.54 = 792.18/x
  3. Step 3: Cross multiply
    933.12x = 1,404.54 × 792.18
  4. Step 4: Simplify right side
    933.12x = 1,112,648.50
  5. Step 5: Solve for x
    x = 1,112,648.50/933.12
  6. Step 6: Final answer
    x = 1,192.40

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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.