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Finding the Fourth Proportional to 93,992,523.60, 140,988,785.40 and 85,914,620.40

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Solution

The fourth proportional to 93,992,523.60, 140,988,785.40 and 85,914,620.40 is: 128,871,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,992,523.60 : 140,988,785.40 = 85,914,620.40 : x
  2. Step 2: Convert to fraction form
    93,992,523.60/140,988,785.40 = 85,914,620.40/x
  3. Step 3: Cross multiply
    93,992,523.60x = 140,988,785.40 × 85,914,620.40
  4. Step 4: Simplify right side
    93,992,523.60x = 12,112,997,978,298,064
  5. Step 5: Solve for x
    x = 12,112,997,978,298,064/93,992,523.60
  6. Step 6: Final answer
    x = 128,871,930.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.