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Finding the Fourth Proportional to 235,806.48, 353,674.56 and 86,011.60

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Solution

The fourth proportional to 235,806.48, 353,674.56 and 86,011.60 is: 129,004.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,806.48 : 353,674.56 = 86,011.60 : x
  2. Step 2: Convert to fraction form
    235,806.48/353,674.56 = 86,011.60/x
  3. Step 3: Cross multiply
    235,806.48x = 353,674.56 × 86,011.60
  4. Step 4: Simplify right side
    235,806.48x = 30,420,114,784.90
  5. Step 5: Solve for x
    x = 30,420,114,784.90/235,806.48
  6. Step 6: Final answer
    x = 129,004.58

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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.