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Finding the Fourth Proportional to 70,355.88, 105,533.60 and 54,368.68

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Solution

The fourth proportional to 70,355.88, 105,533.60 and 54,368.68 is: 81,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,355.88 : 105,533.60 = 54,368.68 : x
  2. Step 2: Convert to fraction form
    70,355.88/105,533.60 = 54,368.68/x
  3. Step 3: Cross multiply
    70,355.88x = 105,533.60 × 54,368.68
  4. Step 4: Simplify right side
    70,355.88x = 5,737,722,527.65
  5. Step 5: Solve for x
    x = 5,737,722,527.65/70,355.88
  6. Step 6: Final answer
    x = 81,552.85

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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.