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Finding the Fourth Proportional to 76,553.95, 105,607.60 and 49,704.88

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Solution

The fourth proportional to 76,553.95, 105,607.60 and 49,704.88 is: 68,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,553.95 : 105,607.60 = 49,704.88 : x
  2. Step 2: Convert to fraction form
    76,553.95/105,607.60 = 49,704.88/x
  3. Step 3: Cross multiply
    76,553.95x = 105,607.60 × 49,704.88
  4. Step 4: Simplify right side
    76,553.95x = 5,249,213,085.09
  5. Step 5: Solve for x
    x = 5,249,213,085.09/76,553.95
  6. Step 6: Final answer
    x = 68,568.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.