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Finding the Fourth Proportional to 63,188.94, 87,200.79 and 34,509

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Solution

The fourth proportional to 63,188.94, 87,200.79 and 34,509 is: 47,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,188.94 : 87,200.79 = 34,509 : x
  2. Step 2: Convert to fraction form
    63,188.94/87,200.79 = 34,509/x
  3. Step 3: Cross multiply
    63,188.94x = 87,200.79 × 34,509
  4. Step 4: Simplify right side
    63,188.94x = 3,009,212,062.11
  5. Step 5: Solve for x
    x = 3,009,212,062.11/63,188.94
  6. Step 6: Final answer
    x = 47,622.45

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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.