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Finding the Fourth Proportional to 958.32, 1,322.48 and 565.34

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Solution

The fourth proportional to 958.32, 1,322.48 and 565.34 is: 780.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.32 : 1,322.48 = 565.34 : x
  2. Step 2: Convert to fraction form
    958.32/1,322.48 = 565.34/x
  3. Step 3: Cross multiply
    958.32x = 1,322.48 × 565.34
  4. Step 4: Simplify right side
    958.32x = 747,641.40
  5. Step 5: Solve for x
    x = 747,641.40/958.32
  6. Step 6: Final answer
    x = 780.16

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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.