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Finding the Fourth Proportional to 956.66, 1,435.56 and 469.76

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Solution

The fourth proportional to 956.66, 1,435.56 and 469.76 is: 704.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.66 : 1,435.56 = 469.76 : x
  2. Step 2: Convert to fraction form
    956.66/1,435.56 = 469.76/x
  3. Step 3: Cross multiply
    956.66x = 1,435.56 × 469.76
  4. Step 4: Simplify right side
    956.66x = 674,368.67
  5. Step 5: Solve for x
    x = 674,368.67/956.66
  6. Step 6: Final answer
    x = 704.92

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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.