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Finding the Fourth Proportional to 93,776,187.60, 140,664,281.40 and 85,415,432.40

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Solution

The fourth proportional to 93,776,187.60, 140,664,281.40 and 85,415,432.40 is: 128,123,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,776,187.60 : 140,664,281.40 = 85,415,432.40 : x
  2. Step 2: Convert to fraction form
    93,776,187.60/140,664,281.40 = 85,415,432.40/x
  3. Step 3: Cross multiply
    93,776,187.60x = 140,664,281.40 × 85,415,432.40
  4. Step 4: Simplify right side
    93,776,187.60x = 12,014,900,419,016,278
  5. Step 5: Solve for x
    x = 12,014,900,419,016,278/93,776,187.60
  6. Step 6: Final answer
    x = 128,123,148.60

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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.