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Finding the Fourth Proportional to 124,509.40, 186,788.40 and 49,616.80

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Solution

The fourth proportional to 124,509.40, 186,788.40 and 49,616.80 is: 74,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,509.40 : 186,788.40 = 49,616.80 : x
  2. Step 2: Convert to fraction form
    124,509.40/186,788.40 = 49,616.80/x
  3. Step 3: Cross multiply
    124,509.40x = 186,788.40 × 49,616.80
  4. Step 4: Simplify right side
    124,509.40x = 9,267,842,685.12
  5. Step 5: Solve for x
    x = 9,267,842,685.12/124,509.40
  6. Step 6: Final answer
    x = 74,434.88

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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.