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Finding the Fourth Proportional to 128,028.50, 176,762.54 and 114,576.62

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Solution

The fourth proportional to 128,028.50, 176,762.54 and 114,576.62 is: 158,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.50 : 176,762.54 = 114,576.62 : x
  2. Step 2: Convert to fraction form
    128,028.50/176,762.54 = 114,576.62/x
  3. Step 3: Cross multiply
    128,028.50x = 176,762.54 × 114,576.62
  4. Step 4: Simplify right side
    128,028.50x = 20,252,854,375.81
  5. Step 5: Solve for x
    x = 20,252,854,375.81/128,028.50
  6. Step 6: Final answer
    x = 158,190.20

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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.