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Finding the Fourth Proportional to 124,358.40, 186,998.40 and 104,083.20

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Solution

The fourth proportional to 124,358.40, 186,998.40 and 104,083.20 is: 156,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,358.40 : 186,998.40 = 104,083.20 : x
  2. Step 2: Convert to fraction form
    124,358.40/186,998.40 = 104,083.20/x
  3. Step 3: Cross multiply
    124,358.40x = 186,998.40 × 104,083.20
  4. Step 4: Simplify right side
    124,358.40x = 19,463,391,866.88
  5. Step 5: Solve for x
    x = 19,463,391,866.88/124,358.40
  6. Step 6: Final answer
    x = 156,510.47

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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.