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Finding the Fourth Proportional to 52,707.80, 79,061.70 and 49,427.30

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Solution

The fourth proportional to 52,707.80, 79,061.70 and 49,427.30 is: 74,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,707.80 : 79,061.70 = 49,427.30 : x
  2. Step 2: Convert to fraction form
    52,707.80/79,061.70 = 49,427.30/x
  3. Step 3: Cross multiply
    52,707.80x = 79,061.70 × 49,427.30
  4. Step 4: Simplify right side
    52,707.80x = 3,907,806,364.41
  5. Step 5: Solve for x
    x = 3,907,806,364.41/52,707.80
  6. Step 6: Final answer
    x = 74,140.95

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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.