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Finding the Fourth Proportional to 929.69, 1,392.79 and 466.93

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Solution

The fourth proportional to 929.69, 1,392.79 and 466.93 is: 699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.69 : 1,392.79 = 466.93 : x
  2. Step 2: Convert to fraction form
    929.69/1,392.79 = 466.93/x
  3. Step 3: Cross multiply
    929.69x = 1,392.79 × 466.93
  4. Step 4: Simplify right side
    929.69x = 650,328.47
  5. Step 5: Solve for x
    x = 650,328.47/929.69
  6. Step 6: Final answer
    x = 699.51

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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.