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Finding the Fourth Proportional to 93,612.70, 140,419.05 and 89,724.70

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Solution

The fourth proportional to 93,612.70, 140,419.05 and 89,724.70 is: 134,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,612.70 : 140,419.05 = 89,724.70 : x
  2. Step 2: Convert to fraction form
    93,612.70/140,419.05 = 89,724.70/x
  3. Step 3: Cross multiply
    93,612.70x = 140,419.05 × 89,724.70
  4. Step 4: Simplify right side
    93,612.70x = 12,599,057,135.54
  5. Step 5: Solve for x
    x = 12,599,057,135.54/93,612.70
  6. Step 6: Final answer
    x = 134,587.05

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1.5x scale

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.