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Finding the Fourth Proportional to 235,957.76, 325,624.55 and 128,528.67

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Solution

The fourth proportional to 235,957.76, 325,624.55 and 128,528.67 is: 177,371.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,957.76 : 325,624.55 = 128,528.67 : x
  2. Step 2: Convert to fraction form
    235,957.76/325,624.55 = 128,528.67/x
  3. Step 3: Cross multiply
    235,957.76x = 325,624.55 × 128,528.67
  4. Step 4: Simplify right side
    235,957.76x = 41,852,090,330.85
  5. Step 5: Solve for x
    x = 41,852,090,330.85/235,957.76
  6. Step 6: Final answer
    x = 177,371.11

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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.