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Finding the Fourth Proportional to 103,688.80, 155,552.40 and 33,570.40

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Solution

The fourth proportional to 103,688.80, 155,552.40 and 33,570.40 is: 50,361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.80 : 155,552.40 = 33,570.40 : x
  2. Step 2: Convert to fraction form
    103,688.80/155,552.40 = 33,570.40/x
  3. Step 3: Cross multiply
    103,688.80x = 155,552.40 × 33,570.40
  4. Step 4: Simplify right side
    103,688.80x = 5,221,956,288.96
  5. Step 5: Solve for x
    x = 5,221,956,288.96/103,688.80
  6. Step 6: Final answer
    x = 50,361.82

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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.