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Finding the Fourth Proportional to 295,712.80, 443,569.20 and 108,685.60

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Solution

The fourth proportional to 295,712.80, 443,569.20 and 108,685.60 is: 163,028.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,712.80 : 443,569.20 = 108,685.60 : x
  2. Step 2: Convert to fraction form
    295,712.80/443,569.20 = 108,685.60/x
  3. Step 3: Cross multiply
    295,712.80x = 443,569.20 × 108,685.60
  4. Step 4: Simplify right side
    295,712.80x = 48,209,584,643.52
  5. Step 5: Solve for x
    x = 48,209,584,643.52/295,712.80
  6. Step 6: Final answer
    x = 163,028.40

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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.