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Finding the Fourth Proportional to 42,665.60, 63,852.60 and 37,416.80

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Solution

The fourth proportional to 42,665.60, 63,852.60 and 37,416.80 is: 55,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,665.60 : 63,852.60 = 37,416.80 : x
  2. Step 2: Convert to fraction form
    42,665.60/63,852.60 = 37,416.80/x
  3. Step 3: Cross multiply
    42,665.60x = 63,852.60 × 37,416.80
  4. Step 4: Simplify right side
    42,665.60x = 2,389,159,963.68
  5. Step 5: Solve for x
    x = 2,389,159,963.68/42,665.60
  6. Step 6: Final answer
    x = 55,997.34

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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.