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Finding the Fourth Proportional to 235,841.85, 325,458.51 and 128,411.88

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Solution

The fourth proportional to 235,841.85, 325,458.51 and 128,411.88 is: 177,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,841.85 : 325,458.51 = 128,411.88 : x
  2. Step 2: Convert to fraction form
    235,841.85/325,458.51 = 128,411.88/x
  3. Step 3: Cross multiply
    235,841.85x = 325,458.51 × 128,411.88
  4. Step 4: Simplify right side
    235,841.85x = 41,792,739,131.10
  5. Step 5: Solve for x
    x = 41,792,739,131.10/235,841.85
  6. Step 6: Final answer
    x = 177,206.63

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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.