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Finding the Fourth Proportional to 124,434.90, 186,393.15 and 103,698.90

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Solution

The fourth proportional to 124,434.90, 186,393.15 and 103,698.90 is: 155,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,434.90 : 186,393.15 = 103,698.90 : x
  2. Step 2: Convert to fraction form
    124,434.90/186,393.15 = 103,698.90/x
  3. Step 3: Cross multiply
    124,434.90x = 186,393.15 × 103,698.90
  4. Step 4: Simplify right side
    124,434.90x = 19,328,764,622.54
  5. Step 5: Solve for x
    x = 19,328,764,622.54/124,434.90
  6. Step 6: Final answer
    x = 155,332.34

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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.