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Finding the Fourth Proportional to 128,040.96, 176,696.67 and 71,452.32

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Solution

The fourth proportional to 128,040.96, 176,696.67 and 71,452.32 is: 98,604.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,040.96 : 176,696.67 = 71,452.32 : x
  2. Step 2: Convert to fraction form
    128,040.96/176,696.67 = 71,452.32/x
  3. Step 3: Cross multiply
    128,040.96x = 176,696.67 × 71,452.32
  4. Step 4: Simplify right side
    128,040.96x = 12,625,387,007.77
  5. Step 5: Solve for x
    x = 12,625,387,007.77/128,040.96
  6. Step 6: Final answer
    x = 98,604.28

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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.