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Finding the Fourth Proportional to 235,743.16, 325,323.12 and 128,313.04

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Solution

The fourth proportional to 235,743.16, 325,323.12 and 128,313.04 is: 177,070.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,743.16 : 325,323.12 = 128,313.04 : x
  2. Step 2: Convert to fraction form
    235,743.16/325,323.12 = 128,313.04/x
  3. Step 3: Cross multiply
    235,743.16x = 325,323.12 × 128,313.04
  4. Step 4: Simplify right side
    235,743.16x = 41,743,198,509.48
  5. Step 5: Solve for x
    x = 41,743,198,509.48/235,743.16
  6. Step 6: Final answer
    x = 177,070.67

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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.