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Finding the Fourth Proportional to 124,389.40, 186,608.40 and 49,496.80

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Solution

The fourth proportional to 124,389.40, 186,608.40 and 49,496.80 is: 74,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,389.40 : 186,608.40 = 49,496.80 : x
  2. Step 2: Convert to fraction form
    124,389.40/186,608.40 = 49,496.80/x
  3. Step 3: Cross multiply
    124,389.40x = 186,608.40 × 49,496.80
  4. Step 4: Simplify right side
    124,389.40x = 9,236,518,653.12
  5. Step 5: Solve for x
    x = 9,236,518,653.12/124,389.40
  6. Step 6: Final answer
    x = 74,254.87

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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.