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Finding the Fourth Proportional to 42,622.60, 63,909.90 and 16,328.20

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Solution

The fourth proportional to 42,622.60, 63,909.90 and 16,328.20 is: 24,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,622.60 : 63,909.90 = 16,328.20 : x
  2. Step 2: Convert to fraction form
    42,622.60/63,909.90 = 16,328.20/x
  3. Step 3: Cross multiply
    42,622.60x = 63,909.90 × 16,328.20
  4. Step 4: Simplify right side
    42,622.60x = 1,043,533,629.18
  5. Step 5: Solve for x
    x = 1,043,533,629.18/42,622.60
  6. Step 6: Final answer
    x = 24,483.11

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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.