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Finding the Fourth Proportional to 92,950.88, 128,272.92 and 50,509.64

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Solution

The fourth proportional to 92,950.88, 128,272.92 and 50,509.64 is: 69,703.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,950.88 : 128,272.92 = 50,509.64 : x
  2. Step 2: Convert to fraction form
    92,950.88/128,272.92 = 50,509.64/x
  3. Step 3: Cross multiply
    92,950.88x = 128,272.92 × 50,509.64
  4. Step 4: Simplify right side
    92,950.88x = 6,479,019,010.95
  5. Step 5: Solve for x
    x = 6,479,019,010.95/92,950.88
  6. Step 6: Final answer
    x = 69,703.69

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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.