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Finding the Fourth Proportional to 11,296.95, 15,580.59 and 7,950.85

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Solution

The fourth proportional to 11,296.95, 15,580.59 and 7,950.85 is: 10,965.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,296.95 : 15,580.59 = 7,950.85 : x
  2. Step 2: Convert to fraction form
    11,296.95/15,580.59 = 7,950.85/x
  3. Step 3: Cross multiply
    11,296.95x = 15,580.59 × 7,950.85
  4. Step 4: Simplify right side
    11,296.95x = 123,878,894.25
  5. Step 5: Solve for x
    x = 123,878,894.25/11,296.95
  6. Step 6: Final answer
    x = 10,965.69

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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.