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Finding the Fourth Proportional to 109,066.80, 163,567.80 and 42,468.60

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Solution

The fourth proportional to 109,066.80, 163,567.80 and 42,468.60 is: 63,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,066.80 : 163,567.80 = 42,468.60 : x
  2. Step 2: Convert to fraction form
    109,066.80/163,567.80 = 42,468.60/x
  3. Step 3: Cross multiply
    109,066.80x = 163,567.80 × 42,468.60
  4. Step 4: Simplify right side
    109,066.80x = 6,946,495,471.08
  5. Step 5: Solve for x
    x = 6,946,495,471.08/109,066.80
  6. Step 6: Final answer
    x = 63,690.28

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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.