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Finding the Fourth Proportional to 73,985.60, 110,913.60 and 44,415.20

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Solution

The fourth proportional to 73,985.60, 110,913.60 and 44,415.20 is: 66,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,985.60 : 110,913.60 = 44,415.20 : x
  2. Step 2: Convert to fraction form
    73,985.60/110,913.60 = 44,415.20/x
  3. Step 3: Cross multiply
    73,985.60x = 110,913.60 × 44,415.20
  4. Step 4: Simplify right side
    73,985.60x = 4,926,249,726.72
  5. Step 5: Solve for x
    x = 4,926,249,726.72/73,985.60
  6. Step 6: Final answer
    x = 66,583.90

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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.