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Finding the Fourth Proportional to 59,985.60, 89,978.40 and 37,726.80

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Solution

The fourth proportional to 59,985.60, 89,978.40 and 37,726.80 is: 56,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,985.60 : 89,978.40 = 37,726.80 : x
  2. Step 2: Convert to fraction form
    59,985.60/89,978.40 = 37,726.80/x
  3. Step 3: Cross multiply
    59,985.60x = 89,978.40 × 37,726.80
  4. Step 4: Simplify right side
    59,985.60x = 3,394,597,101.12
  5. Step 5: Solve for x
    x = 3,394,597,101.12/59,985.60
  6. Step 6: Final answer
    x = 56,590.20

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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.