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Finding the Fourth Proportional to 8,465.44, 11,681.20 and 4,929.28

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Solution

The fourth proportional to 8,465.44, 11,681.20 and 4,929.28 is: 6,801.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.44 : 11,681.20 = 4,929.28 : x
  2. Step 2: Convert to fraction form
    8,465.44/11,681.20 = 4,929.28/x
  3. Step 3: Cross multiply
    8,465.44x = 11,681.20 × 4,929.28
  4. Step 4: Simplify right side
    8,465.44x = 57,579,905.54
  5. Step 5: Solve for x
    x = 57,579,905.54/8,465.44
  6. Step 6: Final answer
    x = 6,801.76

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1.5x scale

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.