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Finding the Fourth Proportional to 42,409.80, 63,614.70 and 36,577.80

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Solution

The fourth proportional to 42,409.80, 63,614.70 and 36,577.80 is: 54,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,409.80 : 63,614.70 = 36,577.80 : x
  2. Step 2: Convert to fraction form
    42,409.80/63,614.70 = 36,577.80/x
  3. Step 3: Cross multiply
    42,409.80x = 63,614.70 × 36,577.80
  4. Step 4: Simplify right side
    42,409.80x = 2,326,885,773.66
  5. Step 5: Solve for x
    x = 2,326,885,773.66/42,409.80
  6. Step 6: Final answer
    x = 54,866.70

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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.