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Finding the Fourth Proportional to 929.16, 1,392.75 and 467.28

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Solution

The fourth proportional to 929.16, 1,392.75 and 467.28 is: 700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.16 : 1,392.75 = 467.28 : x
  2. Step 2: Convert to fraction form
    929.16/1,392.75 = 467.28/x
  3. Step 3: Cross multiply
    929.16x = 1,392.75 × 467.28
  4. Step 4: Simplify right side
    929.16x = 650,804.22
  5. Step 5: Solve for x
    x = 650,804.22/929.16
  6. Step 6: Final answer
    x = 700.42

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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.