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Finding the Fourth Proportional to 19,607.99, 29,415.62 and 7,929.41

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Solution

The fourth proportional to 19,607.99, 29,415.62 and 7,929.41 is: 11,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,607.99 : 29,415.62 = 7,929.41 : x
  2. Step 2: Convert to fraction form
    19,607.99/29,415.62 = 7,929.41/x
  3. Step 3: Cross multiply
    19,607.99x = 29,415.62 × 7,929.41
  4. Step 4: Simplify right side
    19,607.99x = 233,248,384.13
  5. Step 5: Solve for x
    x = 233,248,384.13/19,607.99
  6. Step 6: Final answer
    x = 11,895.58

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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.