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Finding the Fourth Proportional to 80,421.87, 110,973.22 and 44,602.90

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Solution

The fourth proportional to 80,421.87, 110,973.22 and 44,602.90 is: 61,547.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,421.87 : 110,973.22 = 44,602.90 : x
  2. Step 2: Convert to fraction form
    80,421.87/110,973.22 = 44,602.90/x
  3. Step 3: Cross multiply
    80,421.87x = 110,973.22 × 44,602.90
  4. Step 4: Simplify right side
    80,421.87x = 4,949,727,211.32
  5. Step 5: Solve for x
    x = 4,949,727,211.32/80,421.87
  6. Step 6: Final answer
    x = 61,547.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.