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Finding the Fourth Proportional to 10,308.16, 15,468 and 4,152.64

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Solution

The fourth proportional to 10,308.16, 15,468 and 4,152.64 is: 6,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,308.16 : 15,468 = 4,152.64 : x
  2. Step 2: Convert to fraction form
    10,308.16/15,468 = 4,152.64/x
  3. Step 3: Cross multiply
    10,308.16x = 15,468 × 4,152.64
  4. Step 4: Simplify right side
    10,308.16x = 64,233,035.52
  5. Step 5: Solve for x
    x = 64,233,035.52/10,308.16
  6. Step 6: Final answer
    x = 6,231.28

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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.