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Finding the Fourth Proportional to 49,686.60, 74,529.90 and 16,411.80

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Solution

The fourth proportional to 49,686.60, 74,529.90 and 16,411.80 is: 24,617.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,686.60 : 74,529.90 = 16,411.80 : x
  2. Step 2: Convert to fraction form
    49,686.60/74,529.90 = 16,411.80/x
  3. Step 3: Cross multiply
    49,686.60x = 74,529.90 × 16,411.80
  4. Step 4: Simplify right side
    49,686.60x = 1,223,169,812.82
  5. Step 5: Solve for x
    x = 1,223,169,812.82/49,686.60
  6. Step 6: Final answer
    x = 24,617.70

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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.