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Finding the Fourth Proportional to 124,435.40, 186,393.90 and 103,699.40

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Solution

The fourth proportional to 124,435.40, 186,393.90 and 103,699.40 is: 155,333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,435.40 : 186,393.90 = 103,699.40 : x
  2. Step 2: Convert to fraction form
    124,435.40/186,393.90 = 103,699.40/x
  3. Step 3: Cross multiply
    124,435.40x = 186,393.90 × 103,699.40
  4. Step 4: Simplify right side
    124,435.40x = 19,328,935,593.66
  5. Step 5: Solve for x
    x = 19,328,935,593.66/124,435.40
  6. Step 6: Final answer
    x = 155,333.09

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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.