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Finding the Fourth Proportional to 119,972.40, 179,699.40 and 104,420.40

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Solution

The fourth proportional to 119,972.40, 179,699.40 and 104,420.40 is: 156,405.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,972.40 : 179,699.40 = 104,420.40 : x
  2. Step 2: Convert to fraction form
    119,972.40/179,699.40 = 104,420.40/x
  3. Step 3: Cross multiply
    119,972.40x = 179,699.40 × 104,420.40
  4. Step 4: Simplify right side
    119,972.40x = 18,764,283,227.76
  5. Step 5: Solve for x
    x = 18,764,283,227.76/119,972.40
  6. Step 6: Final answer
    x = 156,405.00

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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.