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Finding the Fourth Proportional to 104,398.56, 156,386.40 and 83,374.56

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Solution

The fourth proportional to 104,398.56, 156,386.40 and 83,374.56 is: 124,892.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,398.56 : 156,386.40 = 83,374.56 : x
  2. Step 2: Convert to fraction form
    104,398.56/156,386.40 = 83,374.56/x
  3. Step 3: Cross multiply
    104,398.56x = 156,386.40 × 83,374.56
  4. Step 4: Simplify right side
    104,398.56x = 13,038,647,289.98
  5. Step 5: Solve for x
    x = 13,038,647,289.98/104,398.56
  6. Step 6: Final answer
    x = 124,892.98

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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.