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Finding the Fourth Proportional to 69,607.04, 104,415.04 and 28,053.12

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Solution

The fourth proportional to 69,607.04, 104,415.04 and 28,053.12 is: 42,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,607.04 : 104,415.04 = 28,053.12 : x
  2. Step 2: Convert to fraction form
    69,607.04/104,415.04 = 28,053.12/x
  3. Step 3: Cross multiply
    69,607.04x = 104,415.04 × 28,053.12
  4. Step 4: Simplify right side
    69,607.04x = 2,929,167,646.92
  5. Step 5: Solve for x
    x = 2,929,167,646.92/69,607.04
  6. Step 6: Final answer
    x = 42,081.49

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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.