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Finding the Fourth Proportional to 235,417.07, 353,235.09 and 108,986.60

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Solution

The fourth proportional to 235,417.07, 353,235.09 and 108,986.60 is: 163,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,417.07 : 353,235.09 = 108,986.60 : x
  2. Step 2: Convert to fraction form
    235,417.07/353,235.09 = 108,986.60/x
  3. Step 3: Cross multiply
    235,417.07x = 353,235.09 × 108,986.60
  4. Step 4: Simplify right side
    235,417.07x = 38,497,891,459.79
  5. Step 5: Solve for x
    x = 38,497,891,459.79/235,417.07
  6. Step 6: Final answer
    x = 163,530.59

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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.