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Finding the Fourth Proportional to 386,175.60, 579,652.20 and 186,656.40

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Solution

The fourth proportional to 386,175.60, 579,652.20 and 186,656.40 is: 280,172.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,175.60 : 579,652.20 = 186,656.40 : x
  2. Step 2: Convert to fraction form
    386,175.60/579,652.20 = 186,656.40/x
  3. Step 3: Cross multiply
    386,175.60x = 579,652.20 × 186,656.40
  4. Step 4: Simplify right side
    386,175.60x = 108,195,792,904.08
  5. Step 5: Solve for x
    x = 108,195,792,904.08/386,175.60
  6. Step 6: Final answer
    x = 280,172.52

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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.