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Finding the Fourth Proportional to 76,794.55, 105,963.64 and 42,795.59

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Solution

The fourth proportional to 76,794.55, 105,963.64 and 42,795.59 is: 59,050.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,794.55 : 105,963.64 = 42,795.59 : x
  2. Step 2: Convert to fraction form
    76,794.55/105,963.64 = 42,795.59/x
  3. Step 3: Cross multiply
    76,794.55x = 105,963.64 × 42,795.59
  4. Step 4: Simplify right side
    76,794.55x = 4,534,775,855.54
  5. Step 5: Solve for x
    x = 4,534,775,855.54/76,794.55
  6. Step 6: Final answer
    x = 59,050.75

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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.