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Finding the Fourth Proportional to 93,086.40, 128,460.54 and 50,644.96

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Solution

The fourth proportional to 93,086.40, 128,460.54 and 50,644.96 is: 69,890.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,086.40 : 128,460.54 = 50,644.96 : x
  2. Step 2: Convert to fraction form
    93,086.40/128,460.54 = 50,644.96/x
  3. Step 3: Cross multiply
    93,086.40x = 128,460.54 × 50,644.96
  4. Step 4: Simplify right side
    93,086.40x = 6,505,878,909.88
  5. Step 5: Solve for x
    x = 6,505,878,909.88/93,086.40
  6. Step 6: Final answer
    x = 69,890.76

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1.5x scale

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.