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Finding the Fourth Proportional to 11,312.92, 15,619.92 and 7,544.97

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Solution

The fourth proportional to 11,312.92, 15,619.92 and 7,544.97 is: 10,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,312.92 : 15,619.92 = 7,544.97 : x
  2. Step 2: Convert to fraction form
    11,312.92/15,619.92 = 7,544.97/x
  3. Step 3: Cross multiply
    11,312.92x = 15,619.92 × 7,544.97
  4. Step 4: Simplify right side
    11,312.92x = 117,851,827.80
  5. Step 5: Solve for x
    x = 117,851,827.80/11,312.92
  6. Step 6: Final answer
    x = 10,417.45

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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.