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Finding the Fourth Proportional to 150,025.96, 207,087.96 and 86,389.12

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Solution

The fourth proportional to 150,025.96, 207,087.96 and 86,389.12 is: 119,247.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,025.96 : 207,087.96 = 86,389.12 : x
  2. Step 2: Convert to fraction form
    150,025.96/207,087.96 = 86,389.12/x
  3. Step 3: Cross multiply
    150,025.96x = 207,087.96 × 86,389.12
  4. Step 4: Simplify right side
    150,025.96x = 17,890,146,627.00
  5. Step 5: Solve for x
    x = 17,890,146,627.00/150,025.96
  6. Step 6: Final answer
    x = 119,247.01

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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.