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Finding the Fourth Proportional to 19,359.60, 29,023.20 and 10,125.60

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Solution

The fourth proportional to 19,359.60, 29,023.20 and 10,125.60 is: 15,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.60 : 29,023.20 = 10,125.60 : x
  2. Step 2: Convert to fraction form
    19,359.60/29,023.20 = 10,125.60/x
  3. Step 3: Cross multiply
    19,359.60x = 29,023.20 × 10,125.60
  4. Step 4: Simplify right side
    19,359.60x = 293,877,313.92
  5. Step 5: Solve for x
    x = 293,877,313.92/19,359.60
  6. Step 6: Final answer
    x = 15,179.93

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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.