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Finding the Fourth Proportional to 42,468.55, 63,709.73 and 15,814.64

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Solution

The fourth proportional to 42,468.55, 63,709.73 and 15,814.64 is: 23,724.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,468.55 : 63,709.73 = 15,814.64 : x
  2. Step 2: Convert to fraction form
    42,468.55/63,709.73 = 15,814.64/x
  3. Step 3: Cross multiply
    42,468.55x = 63,709.73 × 15,814.64
  4. Step 4: Simplify right side
    42,468.55x = 1,007,546,444.45
  5. Step 5: Solve for x
    x = 1,007,546,444.45/42,468.55
  6. Step 6: Final answer
    x = 23,724.53

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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.