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Finding the Fourth Proportional to 235,422.40, 353,133.60 and 168,721.60

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Solution

The fourth proportional to 235,422.40, 353,133.60 and 168,721.60 is: 253,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,422.40 : 353,133.60 = 168,721.60 : x
  2. Step 2: Convert to fraction form
    235,422.40/353,133.60 = 168,721.60/x
  3. Step 3: Cross multiply
    235,422.40x = 353,133.60 × 168,721.60
  4. Step 4: Simplify right side
    235,422.40x = 59,581,266,005.76
  5. Step 5: Solve for x
    x = 59,581,266,005.76/235,422.40
  6. Step 6: Final answer
    x = 253,082.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.