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Finding the Fourth Proportional to 92,757.69, 128,004.71 and 50,315.31

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Solution

The fourth proportional to 92,757.69, 128,004.71 and 50,315.31 is: 69,434.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,757.69 : 128,004.71 = 50,315.31 : x
  2. Step 2: Convert to fraction form
    92,757.69/128,004.71 = 50,315.31/x
  3. Step 3: Cross multiply
    92,757.69x = 128,004.71 × 50,315.31
  4. Step 4: Simplify right side
    92,757.69x = 6,440,596,413.53
  5. Step 5: Solve for x
    x = 6,440,596,413.53/92,757.69
  6. Step 6: Final answer
    x = 69,434.64

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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.