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Finding the Fourth Proportional to 124,434.40, 186,392.40 and 103,698.40

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Solution

The fourth proportional to 124,434.40, 186,392.40 and 103,698.40 is: 155,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,434.40 : 186,392.40 = 103,698.40 : x
  2. Step 2: Convert to fraction form
    124,434.40/186,392.40 = 103,698.40/x
  3. Step 3: Cross multiply
    124,434.40x = 186,392.40 × 103,698.40
  4. Step 4: Simplify right side
    124,434.40x = 19,328,593,652.16
  5. Step 5: Solve for x
    x = 19,328,593,652.16/124,434.40
  6. Step 6: Final answer
    x = 155,331.59

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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.