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Finding the Fourth Proportional to 19,359.72, 29,039.58 and 5,508.72

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Solution

The fourth proportional to 19,359.72, 29,039.58 and 5,508.72 is: 8,263.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.72 : 29,039.58 = 5,508.72 : x
  2. Step 2: Convert to fraction form
    19,359.72/29,039.58 = 5,508.72/x
  3. Step 3: Cross multiply
    19,359.72x = 29,039.58 × 5,508.72
  4. Step 4: Simplify right side
    19,359.72x = 159,970,915.14
  5. Step 5: Solve for x
    x = 159,970,915.14/19,359.72
  6. Step 6: Final answer
    x = 8,263.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.