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Finding the Fourth Proportional to 92,905.08, 128,209.05 and 50,464.50

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Solution

The fourth proportional to 92,905.08, 128,209.05 and 50,464.50 is: 69,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,905.08 : 128,209.05 = 50,464.50 : x
  2. Step 2: Convert to fraction form
    92,905.08/128,209.05 = 50,464.50/x
  3. Step 3: Cross multiply
    92,905.08x = 128,209.05 × 50,464.50
  4. Step 4: Simplify right side
    92,905.08x = 6,470,005,603.73
  5. Step 5: Solve for x
    x = 6,470,005,603.73/92,905.08
  6. Step 6: Final answer
    x = 69,641.03

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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.