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Finding the Fourth Proportional to 12,355.58, 18,534.50 and 4,035.64

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Solution

The fourth proportional to 12,355.58, 18,534.50 and 4,035.64 is: 6,053.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.58 : 18,534.50 = 4,035.64 : x
  2. Step 2: Convert to fraction form
    12,355.58/18,534.50 = 4,035.64/x
  3. Step 3: Cross multiply
    12,355.58x = 18,534.50 × 4,035.64
  4. Step 4: Simplify right side
    12,355.58x = 74,798,476.91
  5. Step 5: Solve for x
    x = 74,798,476.91/12,355.58
  6. Step 6: Final answer
    x = 6,053.82

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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.