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Finding the Fourth Proportional to 109,739.50, 151,440.51 and 59,438.50

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Solution

The fourth proportional to 109,739.50, 151,440.51 and 59,438.50 is: 82,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,739.50 : 151,440.51 = 59,438.50 : x
  2. Step 2: Convert to fraction form
    109,739.50/151,440.51 = 59,438.50/x
  3. Step 3: Cross multiply
    109,739.50x = 151,440.51 × 59,438.50
  4. Step 4: Simplify right side
    109,739.50x = 9,001,396,753.64
  5. Step 5: Solve for x
    x = 9,001,396,753.64/109,739.50
  6. Step 6: Final answer
    x = 82,025.13

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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.