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Finding the Fourth Proportional to 29,356.45, 40,511.91 and 15,927.91

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Solution

The fourth proportional to 29,356.45, 40,511.91 and 15,927.91 is: 21,980.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,356.45 : 40,511.91 = 15,927.91 : x
  2. Step 2: Convert to fraction form
    29,356.45/40,511.91 = 15,927.91/x
  3. Step 3: Cross multiply
    29,356.45x = 40,511.91 × 15,927.91
  4. Step 4: Simplify right side
    29,356.45x = 645,270,056.41
  5. Step 5: Solve for x
    x = 645,270,056.41/29,356.45
  6. Step 6: Final answer
    x = 21,980.52

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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.