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Finding the Fourth Proportional to 63,709.34, 87,921.87 and 35,415.50

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Solution

The fourth proportional to 63,709.34, 87,921.87 and 35,415.50 is: 48,875.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,709.34 : 87,921.87 = 35,415.50 : x
  2. Step 2: Convert to fraction form
    63,709.34/87,921.87 = 35,415.50/x
  3. Step 3: Cross multiply
    63,709.34x = 87,921.87 × 35,415.50
  4. Step 4: Simplify right side
    63,709.34x = 3,113,796,986.99
  5. Step 5: Solve for x
    x = 3,113,796,986.99/63,709.34
  6. Step 6: Final answer
    x = 48,875.05

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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.