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Finding the Fourth Proportional to 92,909.45, 128,215.71 and 50,468.00

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Solution

The fourth proportional to 92,909.45, 128,215.71 and 50,468.00 is: 69,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,909.45 : 128,215.71 = 50,468.00 : x
  2. Step 2: Convert to fraction form
    92,909.45/128,215.71 = 50,468.00/x
  3. Step 3: Cross multiply
    92,909.45x = 128,215.71 × 50,468.00
  4. Step 4: Simplify right side
    92,909.45x = 6,470,789,811.20
  5. Step 5: Solve for x
    x = 6,470,789,811.20/92,909.45
  6. Step 6: Final answer
    x = 69,646.20

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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.