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Finding the Fourth Proportional to 29,628.91, 40,915.17 and 19,036.99

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Solution

The fourth proportional to 29,628.91, 40,915.17 and 19,036.99 is: 26,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,628.91 : 40,915.17 = 19,036.99 : x
  2. Step 2: Convert to fraction form
    29,628.91/40,915.17 = 19,036.99/x
  3. Step 3: Cross multiply
    29,628.91x = 40,915.17 × 19,036.99
  4. Step 4: Simplify right side
    29,628.91x = 778,901,682.14
  5. Step 5: Solve for x
    x = 778,901,682.14/29,628.91
  6. Step 6: Final answer
    x = 26,288.57

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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.