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Finding the Fourth Proportional to 235,996.90, 353,412.15 and 156,681.70

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Solution

The fourth proportional to 235,996.90, 353,412.15 and 156,681.70 is: 234,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,996.90 : 353,412.15 = 156,681.70 : x
  2. Step 2: Convert to fraction form
    235,996.90/353,412.15 = 156,681.70/x
  3. Step 3: Cross multiply
    235,996.90x = 353,412.15 × 156,681.70
  4. Step 4: Simplify right side
    235,996.90x = 55,373,216,462.66
  5. Step 5: Solve for x
    x = 55,373,216,462.66/235,996.90
  6. Step 6: Final answer
    x = 234,635.36

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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.