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Finding the Fourth Proportional to 7,294.64, 10,921.28 and 5,670.18

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Solution

The fourth proportional to 7,294.64, 10,921.28 and 5,670.18 is: 8,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,294.64 : 10,921.28 = 5,670.18 : x
  2. Step 2: Convert to fraction form
    7,294.64/10,921.28 = 5,670.18/x
  3. Step 3: Cross multiply
    7,294.64x = 10,921.28 × 5,670.18
  4. Step 4: Simplify right side
    7,294.64x = 61,925,623.43
  5. Step 5: Solve for x
    x = 61,925,623.43/7,294.64
  6. Step 6: Final answer
    x = 8,489.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.