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Finding the Fourth Proportional to 979.02, 1,467.72 and 924.48

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Solution

The fourth proportional to 979.02, 1,467.72 and 924.48 is: 1,385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.02 : 1,467.72 = 924.48 : x
  2. Step 2: Convert to fraction form
    979.02/1,467.72 = 924.48/x
  3. Step 3: Cross multiply
    979.02x = 1,467.72 × 924.48
  4. Step 4: Simplify right side
    979.02x = 1,356,877.79
  5. Step 5: Solve for x
    x = 1,356,877.79/979.02
  6. Step 6: Final answer
    x = 1,385.96

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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.