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Finding the Fourth Proportional to 124,543.40, 186,839.40 and 49,650.80

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Solution

The fourth proportional to 124,543.40, 186,839.40 and 49,650.80 is: 74,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,543.40 : 186,839.40 = 49,650.80 : x
  2. Step 2: Convert to fraction form
    124,543.40/186,839.40 = 49,650.80/x
  3. Step 3: Cross multiply
    124,543.40x = 186,839.40 × 49,650.80
  4. Step 4: Simplify right side
    124,543.40x = 9,276,725,681.52
  5. Step 5: Solve for x
    x = 9,276,725,681.52/124,543.40
  6. Step 6: Final answer
    x = 74,485.89

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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.