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Finding the Fourth Proportional to 124,806.40, 187,210.40 and 49,932.80

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Solution

The fourth proportional to 124,806.40, 187,210.40 and 49,932.80 is: 74,899.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,806.40 : 187,210.40 = 49,932.80 : x
  2. Step 2: Convert to fraction form
    124,806.40/187,210.40 = 49,932.80/x
  3. Step 3: Cross multiply
    124,806.40x = 187,210.40 × 49,932.80
  4. Step 4: Simplify right side
    124,806.40x = 9,347,939,461.12
  5. Step 5: Solve for x
    x = 9,347,939,461.12/124,806.40
  6. Step 6: Final answer
    x = 74,899.52

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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.