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Finding the Fourth Proportional to 216,787.96, 325,285.62 and 76,612.60

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Solution

The fourth proportional to 216,787.96, 325,285.62 and 76,612.60 is: 114,955.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,787.96 : 325,285.62 = 76,612.60 : x
  2. Step 2: Convert to fraction form
    216,787.96/325,285.62 = 76,612.60/x
  3. Step 3: Cross multiply
    216,787.96x = 325,285.62 × 76,612.60
  4. Step 4: Simplify right side
    216,787.96x = 24,920,977,090.81
  5. Step 5: Solve for x
    x = 24,920,977,090.81/216,787.96
  6. Step 6: Final answer
    x = 114,955.54

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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.